[MBZ] Summer tire recommendation W124 16
Hello All, I need a new set of summer tires for my '90 W124. I run snow tires in the winter on the standard 15 pancakes that came with the car. In the summer I am using later model 16 E-class wheels. They really give the car a more modern look. Based on some list recommendations I had been using Kuhmo Ectsa 711 tires which are now wore out. I must say that they were the worst tires I've ever owned. I only got around 15k out of them and they really made the car feel squirrelly and tracked the road terribly. The car is awesome with my Michelin Arctic Alpines. Can anyone (Dave M. perhaps?) recommend a good summer tire for this car. I'd rather not break the bank but I guess I better spend a bit more than I did on the Kuhmo's. Ralph W. '90 300D'83 300CD '01 E320 '82 300TD From [EMAIL PROTECTED] Sat Jun 10 00:50:29 2006 Received: from py-out-1112.google.com ([64.233.166.181]) by server8.arterytc8.net with esmtp (Exim 4.52) id 1ForgI-0007la-8x for Mercedes@okiebenz.com; Sat, 10 Jun 2006 00:50:28 + Received: by py-out-1112.google.com with SMTP id c39so985839pyd for Mercedes@okiebenz.com; Fri, 09 Jun 2006 17:50:18 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s¾ta; d=gmail.com; h=received:in-reply-to:references:mime-version:x-priority:content-type:message-id:reply-to:content-transfer-encoding:from:subject:date:to:x-mailer:sender; b£A7pJ9X35e/x6d2sCfptOXnpIYteq8RVjFO25kkfvxaO1NfSS+BGuIuMrlO38+92RaBWTGohvuf1Xbdm8GNgKLEos9VUpJZzxNYeeTBwrh1jmuVfGkvzLTWm9Dg2xpLBp3JgfkzcTyJn9Q5LHK+sHJS94YT1HjX8PrUDFodOJgReceived: by 10.35.20.14 with SMTP id x14mr3658153pyi; Fri, 09 Jun 2006 17:50:18 -0700 (PDT) Received: from ?192.168.1.70? ( [24.108.6.52]) by mx.gmail.com with ESMTP id w63sm1185950pyw.2006.06.09.17.50.17; Fri, 09 Jun 2006 17:50:17 -0700 (PDT) In-Reply-To: [EMAIL PROTECTED] References: [EMAIL PROTECTED] Mime-Version: 1.0 (Apple Message framework v750) X-Priority: 3 Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: [EMAIL PROTECTED] Content-Transfer-Encoding: 7bit From: John M McIntosh [EMAIL PROTECTED] Date: Fri, 9 Jun 2006 17:50:13 -0700 To: Mercedes Discussion List Mercedes@okiebenz.com X-Mailer: Apple Mail (2.750) Sender: John M McIntosh [EMAIL PROTECTED] X-Antivirus-Scanner: Clean mail though you should still use an Antivirus Subject: Re: [MBZ] Summer tire recommendation W124 16 X-BeenThere: Mercedes@okiebenz.com X-Mailman-Version: 2.1.6 Precedence: list Reply-To: [EMAIL PROTECTED], Mercedes Discussion List Mercedes@okiebenz.com List-Id: Mercedes Discussion List mercedes_okiebenz.com.okiebenz.com List-Unsubscribe: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com, mailto:[EMAIL PROTECTED] List-Archive: http://okiebenz.com/pipermail/mercedes_okiebenz.com List-Post: mailto:Mercedes@okiebenz.com List-Help: mailto:[EMAIL PROTECTED] List-Subscribe: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com, mailto:[EMAIL PROTECTED] X-List-Received-Date: Sat, 10 Jun 2006 00:50:29 - Well I have Michelin Arctic Alpines on the 90's 300TDt but in my opinion they tend to hydroplane or behave oddly when encountering puddles at highway speeds, comparing that to the set of Michelin hydro-edge ones on the 83 300TDt, or even the MXV4+ on the 500SEL. I'll note the Arctic Alpine tire has been replaced with X-Ice and our conditions don't include winter driving anyway, rain yes, snow no. Because of deal I got at the local dealer last fall I'm about to put a set of Michelin MXV4+ V rated ones on the 90's wagon. Hopefully they will work as expected. For the 500SEL I've been collecting notes about tires and would like to try a set of Continental ContiPremiumContact 2 235/60R16W but I don't think they offer them in North America. Since it sits idle quite a bit now it's prone to flat spotting the Michelins. Summer tires? Michelin Pilot, or something from Continental come to mind On 9-Jun-06, at 4:04 PM, Ralph W wrote: Hello All, I need a new set of summer tires for my '90 W124. I run snow tires in the winter on the standard 15 pancakes that came with the car. In the summer I am using later model 16 E-class wheels. They really give the car a more modern look. Based on some list recommendations I had been using Kuhmo Ectsa 711 tires which are now wore out. I must say that they were the worst tires I've ever owned. I only got around 15k out of them and they really made the car feel squirrelly and tracked the road terribly. The car is awesome with my Michelin Arctic Alpines. Can anyone (Dave M. perhaps?) recommend a good summer tire for this car. I'd rather not break the bank but I guess I better spend a bit more than I did on the Kuhmo's. Ralph W. '90 300D'83 300CD '01 E320 '82 300TD ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts
Re: [MBZ] Summer tire recommendation W124 16
I need to point out that I made an error on the Kuhmo's the model I have is the Ecsta HP4 which is no longer available on TIRERACK.com. I agree with John on the behavior of the Arctic's on my car. I was merely trying to make the point that the car is worlds better with the Alpines than the Kuhmos. I'll take my 82' 300TD over the W124 in snow any day. - Original Message - From: John M McIntosh [EMAIL PROTECTED] To: Mercedes Discussion List Mercedes@okiebenz.com Sent: Friday, June 09, 2006 8:50 PM Subject: Re: [MBZ] Summer tire recommendation W124 16 Well I have Michelin Arctic Alpines on the 90's 300TDt but in my opinion they tend to hydroplane or behave oddly when encountering puddles at highway speeds, comparing that to the set of Michelin hydro-edge ones on the 83 300TDt, or even the MXV4+ on the 500SEL. I'll note the Arctic Alpine tire has been replaced with X-Ice and our conditions don't include winter driving anyway, rain yes, snow no. Because of deal I got at the local dealer last fall I'm about to put a set of Michelin MXV4+ V rated ones on the 90's wagon. Hopefully they will work as expected. For the 500SEL I've been collecting notes about tires and would like to try a set of Continental ContiPremiumContact 2 235/60R16W but I don't think they offer them in North America. Since it sits idle quite a bit now it's prone to flat spotting the Michelins. Summer tires? Michelin Pilot, or something from Continental come to mind
Re: [MBZ] DIY AC repair in modern times
Both pressures are low. Compressor _could_ cause this, but it sounds undercharged. I am going to put the gauges on it tomorrow. Is there a max pressure at Idle? I thought that the low side pressure was important at idle like not to exceed 28 psi or something? Am I misinformed? At what RPM should it start to work? Also I was told in an older system if you replace the compressor you should replace the expansion valve? The tale I was told on this is that here in Texas 1t 110 F with a new compressor, they will usually blow when they are old. Did I bite on some bate and swallow it hook line and sinker? What should I look for with the gauges on it tomorrow? The systems I worked on 20 years ago were 220V AC operated. Compressor output was constant. I am trying to understand when it should be working? (in terms of RPM) George Larribeau Dallas Texas 1985 300SD 170K 1987 HD FLHTC 86K 1984 Motoguzzi Cal -2 80K 1972 Motoguzzi Ambassador LOTS 1965 Chevy C-10 pick up truck lots of miles 3rd small block ..(Extra Ugly,but runs) 1993 BMW 323i 110K (Wife's Car) 1967 BMW R50/2 (Wife's MC, currently in a Basket)
[MBZ] it left as mysteriously as it came
Remember all the sudden the SDL tranny wouldnt shift till about 3500 rpm? Well all the sudden today its back to normal. Wierd. -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] What tire size are people running with 15-inch rims, on the older cars?
Well the stock size on 126 cars that use those wheels is 205/65-15 so thats what I would use. Steve MacSween wrote: Just curious... plan to put some 15 rims I have, onto my w126, and I'd like to try some 205/65-15 tires I have lying around here. IIRC, conventional wisdom has it that you should use 70-series, which is what I had with the 15 Mille Miglia rims on my w116 SD. TKS -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] test
you failed Roger Conlon wrote: This is just a test. _ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] times running out OK Don
I dont have time to go get it, and am running out of room. OK Don wrote: It's yours -- I don't have a place to put it. On 6/9/06, Kaleb C. Striplin [EMAIL PROTECTED] wrote: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItemitem=4646349169rd=1sspagename=STRK%3AMEWA%3AITrd=1 -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] Summer tire recommendation W124 16
Well the 795's are the ones you would want. Dont know anything about the 711's Ralph W wrote: Hello All, I need a new set of summer tires for my '90 W124. I run snow tires in the winter on the standard 15 pancakes that came with the car. In the summer I am using later model 16 E-class wheels. They really give the car a more modern look. Based on some list recommendations I had been using Kuhmo Ectsa 711 tires which are now wore out. I must say that they were the worst tires I've ever owned. I only got around 15k out of them and they really made the car feel squirrelly and tracked the road terribly. The car is awesome with my Michelin Arctic Alpines. Can anyone (Dave M. perhaps?) recommend a good summer tire for this car. I'd rather not break the bank but I guess I better spend a bit more than I did on the Kuhmo's. Ralph W. '90 300D'83 300CD '01 E320 '82 300TD ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] A possibly entertaining story, addition.
Gerry typed: What is the humidity level in the building when they (evap coolers) are working well? Do people who use them have any problems with mold growth? I'm not sure...it's totally comfortable, though. Mold is never a problem...at least not in my experience since I quit using it when the dew point temp gets near 50 degrees. Their efficiency plummets when the dew point rises. Bob Rentfro '77 300D 154 K '01 VW Beetle TDI 66K waiting for '72 350SL 78K
Re: [MBZ] unobtanium, but on crack
On Thu, 8 Jun 2006 21:55:23 -0600 Craig McCluskey [EMAIL PROTECTED] wrote: On Thu, 8 Jun 2006 10:26:43 -0400 John Berryman [EMAIL PROTECTED] wrote: High? If it really has 127,000, $3500 is real fair. Although, as usual the auction is not near over. Why do salvage titles scare people so much? What if it was a recovered stolen or something that didn't involve chassis damage? What if it was totaled and repaired properly?The seller might be truthful if asked about it. I asked. I'll let you know what he says. My email to seller: == You say, Body is straight like an arrow, no any dents or scratches. Pain shines. All interior looks great. The autotransmission shifts great. No any leaks underneath. The tires have 80% of life tread. But then at the top it says: Title: Salvage So why does it have a salvage title? Thanks, Craig = His reply: = Hi! Thanks for your interest! Great choice! Everything mentioned in the listing is true. The car has been involved in an accident. After that I have replaced the driver's door. The car has been refinished after that. So it's fine right now. Bid with confidence. Hope we will seal the deal. Thank you.
[MBZ] '92 300E AC compressor in '87 300TD?
Well, either the stars must have aligned or I shuffled across some random pixie dust, but a W124 finally showed up at the local Pick-a-Part--this has never ever ever happened around here before...ever. It's a '92 300E, and I nabbed the steering wheel (w/airbag), glovebox door, speakers, rear door handles, and AC compressor. Does anyone know whether this late-model compressor is compatible with the AC system in my '87 300TD? TIA -- Casey Olympia, WA Biodiesel: I drive in a persistent vegetative state '87 300TD intercooler #22 (215k) '84 300D (213k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
Re: [MBZ] DIY AC repair in modern times
R12 low side should be above 35 psi (which, so conveniently, is also 35F) with expansion valve open (as it will be at idle). The high side pressure should be around 250 psi, higher as the external temp goes up. At 1500 rpm (the normal spec) low side pressure should be 35 and high side under 350 or so. Aux fan should run above about 250 psi, I think, although I'm not exactly sure of that. Certainly comes on as I charge my car(s). When the expansion valve closes due to low evaporator temp, the low side can drop as low as -15 psi, as it should to prevent freezeup. The compressor will also cycle on a Benz to prevent freezeup and to control cooling. Low high side pressures and no liquid in the sight glass (it looks different that the liquid, notably it will have oil bubbles) indicate a low charge. If you have intermittant very low (- 15 or lower) pressures while checking, the expansion valve is closing and the compressor is fine. Cold pressure with the compressor disengaged should be 70 to 100 psi, I think, at least significantly higher than 50 psi. I've not checked that in a long while, and you cannot charge by idle pressure (weigh the cans instead), but less than 50 psi cold with compressor disengaged would make me think low charge. If you want to stick with R12, have what is in there recovered, replace ALL the o-rings, and charge with something else to check for leaks, then repair any. You can then recharge with R12 with some assurance it will stay in. If you want to stay with R12 for the long run, I would also suggest replacing all flexible hoses with new barrier type hoses as they leak less. Peter
Re: [MBZ] '92 300E AC compressor in '87 300TD?
Zeitgeist wrote: Well, either the stars must have aligned or I shuffled across some random pixie dust, but a W124 finally showed up at the local Pick-a-Part--this has never ever ever happened around here before...ever. It's a '92 300E, and I nabbed the steering wheel (w/airbag), glovebox door, speakers, rear door handles, and AC compressor. Does anyone know whether this late-model compressor is compatible with the AC system in my '87 300TD? TIA Should be interchangeable. Is it a Nippondenso 10P15? Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
Re: [MBZ] 617.950 617.952 differences
Aight, with out the Finnish mods and just Dave M.'s mods. On Fri, 09 Jun 2006 16:41:09 -0500, Marshall Booth [EMAIL PROTECTED] wrote: Luther Gulseth wrote: And the ultimate would be a 124 coupe with OM603 w/Finnish mods.. Not if you wanted the engine to last for 250-300kmi!! Marshall -- Luther KB5QHU Alma, Ark '83 300SD (236 kmi) '82 300CD (160 kmi) '82 300D (74 kmi) needs MAJOR work
Re: [MBZ] '92 300E AC compressor in '87 300TD?
Uh oh, it says it's a 10 PA 17C. Is that bad? MB part # 116 130 05 15 On 6/9/06, Marshall Booth [EMAIL PROTECTED] wrote: Should be interchangeable. Is it a Nippondenso 10P15? Marshall Casey Olympia, WA Biodiesel: I drive in a persistent vegetative state '87 300TD intercooler #22 (215k) '84 300D (213k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
Re: [MBZ] it left as mysteriously as it came
On Jun 9, 2006, at 9:48 PM, Kaleb C. Striplin wrote: Remember all the sudden the SDL tranny wouldnt shift till about 3500 rpm? Well all the sudden today its back to normal. Wierd. Whatever it was, it may be wise to change the fluid/filter. A valve could have gummed up or stuck with particles in the bore. Isn't there a temp switch that delays shifting when cold? I love it when cars fix themselves but hate not knowing the cause of the trouble Johnny B. I Mac Therefore I am
Re: [MBZ] '92 300E AC compressor in '87 300TD?
Yup, it's different. The 87 uses a 10P15. The 10 PA 17C is shorter, and I don't know if the holes line up, and the speed sensor may be different. Peter
Re: [MBZ] '92 300E AC compressor in '87 300TD?
Uh oh, it says it's a 10 PA 17C. Is that bad? Should be interchangeable. Is it a Nippondenso 10P15? The 10 is the number of pistons (actually five double-ended ones), the 15/17 is the capacity in some units. There are smaller ones too. If it fits, and the speed sensor is compatible, it ought to work. -- Jim
Re: [MBZ] DIY AC repair in modern times
When the expansion valve closes due to low evaporator temp, the low side can drop as low as -15 psi, as it should to prevent freezeup. The compressor will also cycle on a Benz to prevent freezeup and to control cooling. When charging on a hot day, as I like to do, the system ends up running flat-out and you don't usually have too much trouble with weird symptoms caused by feedback mechanisms kicking in. A big reason I like to do it then! That, and using test refrigerant instead of R12 means it's not cookbook time, you have to tinker with the (under-)charge. -- Jim
Re: [MBZ] DIY AC repair in modern times
I am going to put the gauges on it tomorrow. Is there a max pressure at Idle? I thought that the low side pressure was important at idle like not to exceed 28 psi or something? At idle it's not running very effectively, and I've found the pressures are _never_ as low as when running at speed. 28 is way too low an expectation at idle in my (limited) experience. I was told in an older system if you replace the compressor you should replace the expansion valve? Depends on why the replacement. Because expansion valves are easy to clog, if the compressor grenaded you may well have to. But if a reed valve broke and it just couldn't pump well then there would be no need, nor if it was just a bearing that went out. Did I bite on some bait and swallow it hook line and sinker? Commercial mobile AC servicing is, these days, a government-sanctioned racket IMHO. I have _never_ heard of a repair estimate that did not entail replacing at least half of the system, even if the real fault was merely a leaky O-ring. Thank you EPA. I do my own these days, and I've spent less keeping my entire fleet going, including the purchase of tools, than the _first_ estimate I had done. -- Jim
Re: [MBZ] DIY AC repair in modern times
Is there a max pressure at Idle? The modern AC system is deceptively simple. It's rather elegant engineering, which means that it's more complex than it appears. It's all about fluid dynamics, with phase changes thrown in, and a lot of weird plumbing. Testing is done by pressure gauges, thermometers, and inference, yet an important variable is the amount of fluid flow, both gaseous and liquid, for which there is no direct measurement. In electrical terms, it's like trying to diagnose a battery/starter problem using only a voltmeter and your brain. That's what most of us do and it certainly works, but it's _so_ much easier to _also_ use an ammeter to measure the current draw rather than trying to infer it. -- Jim
Re: [MBZ] it left as mysteriously as it came
On Fri, 09 Jun 2006 20:48:17 -0500 Kaleb C. Striplin [EMAIL PROTECTED] wrote: Remember all the sudden the SDL tranny wouldnt shift till about 3500 rpm? Well all the sudden today its back to normal. Wierd. So how's the tranny fluid? Is that the car that had PeptoBismol? I have trouble following which car of yours has what. Craig
[MBZ] Swamp coolers [was: Re: A possibly entertaining story, addition.]
On Fri, 9 Jun 2006 11:58:31 -0400 archer [EMAIL PROTECTED] wrote: What is the humidity level in the building when they are working well? I've never measured it, but my guess is 50 - 70%. Do people who use them have any problems with mold growth? I'm sure they do. I haven't used one in years, but my neighbor has one and I didn't have problems with mold (I'm allergic to it) when I went in his house. Craig
Re: [MBZ] wheels for 126/ 8 hole wheels for sale
In a message dated 6/7/2006 2:46:30 P.M. US Mountain Standard Time, [EMAIL PROTECTED] writes: There was some discussion about wheels for a 126 a few months back. My 126 (1990 300SEL) has the standard 15 hole wheels and they are fine. No marks or scrapes and I sort of a fanatic about keeping my car clean, so the wheels are not stained. However, I really like the looks of the 8 hole wheels on the later models. I also like the look of the chrome 15 hole wheels. Does anyone know of place to get either of these wheels for my 126 (besides Tire Rack). I would like to find used Mercedes wheels for a reasonable price, rather than buying the aftermarket wheels. Donald, Check out my wheels on EBAY. They are in Phoenix and I assume you are in Oklahoma. 16 MERCEDES WHEELS, TIRES, AND LUG BOLTS. Item number: 8073272449 Probably not cost effective to ship as the set weighs over 200 pounds. Regards, Jim Friesen Phoenix AZ 79 300SD, 262 K miles 98 ML 320, 142 K miles
[MBZ] Electronic AC servo on sale.
Just got my Performance catalog yesterday and the electronic AC servo is on sale for $499, marked down from $699. This is the type two servo that fits the 107, 116, and 123 chassis from the mid 70s to early 80s. Regards, Jim Friesen Phoenix AZ 79 300SD, 262 K miles 98 ML 320, 142 K miles
Re: [MBZ] it left as mysteriously as it came
sounds like it was just a little cold Harry 69 280 SEL 120,000 Miles 72 350SL 108,000 Miles 2004 VW Passat 4 Motion 1999 Mazda Miata -Original Message- From: Kaleb C. Striplin [EMAIL PROTECTED] To: Mercedes Mailing List mercedes@okiebenz.com Sent: Fri, 09 Jun 2006 20:48:17 -0500 Subject: [MBZ] it left as mysteriously as it came Remember all the sudden the SDL tranny wouldnt shift till about 3500 rpm? Well all the sudden today its back to normal. Wierd. -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ Try the New Netscape Mail Today! Virtually Spam-Free | More Storage | Import Your Contact List http://mail.netscape.com
Re: [MBZ] Summer tire recommendation W124 16
what was the original tire size? guessing maybe a 195 65 15? Harry 69 280 SEL 120,000 Miles 72 350SL 108,000 Miles 2004 VW Passat 4 Motion 1999 Mazda Miata -Original Message- From: Ralph W [EMAIL PROTECTED] To: Mercedes@okiebenz.com Sent: Fri, 9 Jun 2006 19:04:47 -0400 Subject: [MBZ] Summer tire recommendation W124 16 Hello All, I need a new set of summer tires for my '90 W124. I run snow tires in the winter on the standard 15 pancakes that came with the car. In the summer I am using later model 16 E-class wheels. They really give the car a more modern look. Based on some list recommendations I had been using Kuhmo Ectsa 711 tires which are now wore out. I must say that they were the worst tires I've ever owned. I only got around 15k out of them and they really made the car feel squirrelly and tracked the road terribly. The car is awesome with my Michelin Arctic Alpines. Can anyone (Dave M. perhaps?) recommend a good summer tire for this car. I'd rather not break the bank but I guess I better spend a bit more than I did on the Kuhmo's. Ralph W. '90 300D'83 300CD '01 E320 '82 300TD ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ Try the New Netscape Mail Today! Virtually Spam-Free | More Storage | Import Your Contact List http://mail.netscape.com
[MBZ] Need help with Power Steering Issues
My 1990 300TE's steering has not been right since we woke it up from it's winter nap. It seems to fight you as you drive. I had brought it to out local allignment shop here to see what they could do, and they told me it needed an idler arm - so I took it back and replaced the bushings (which looked fine) and brought it back with same condition of steering fight. Well, they did the allignment and it made zero difference, so I took some time last night to do a power steering flush. I think I may have found the problem. When I removed the return line (soft rubber hose, clamped on, right?) and ran the car, turning the wheel, I was unable to get any fluid to come out of the hose. It feels like power steering is assisting me in turning the wheel, but I don't understand why there isn't any fluid coming out the hose. Do I have the right hose, and should fluid be coming out? If fluid is supposed to come out, anyone have any ideas why mine doesn't? Thanks in advance, Dave Wakin 1990 300TE 1982 300SD 1997 e320
Re: [MBZ] it left as mysteriously as it came
Kaleb C. Striplin wrote: Remember all the sudden the SDL tranny wouldnt shift till about 3500 rpm? Well all the sudden today its back to normal. Wierd. If I were you, I'd drain and fill with Walmart Dexron III, drive it at least 1000 miles and then change fluid and filter, with M1 if I were going to keep it or give it to Regina.
Re: [MBZ] it left as mysteriously as it came
Kaleb C. Striplin wrote: Remember all the sudden the SDL tranny wouldnt shift till about 3500 rpm? Well all the sudden today its back to normal. Wierd. A stuck kickdown switch could do that (stuck then, not now). Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
Re: [MBZ] '92 300E AC compressor in '87 300TD?
Zeitgeist wrote: Uh oh, it says it's a 10 PA 17C. Is that bad? MB part # 116 130 05 15 That's a larger capacity (173 cc) compressor that was installed in late '80s 107s and larger 126s. The 10P15 has 153 cc capacity. If it fits, I think it should work. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
Re: [MBZ] '92 300E AC compressor in '87 300TD?
What does the speed sensor do? Do '83 300D Turbos have them? Are they part of the compressor? Thanks, Gerry Archer - Original Message - From: Jim Cathey [EMAIL PROTECTED] To: Mercedes Discussion List Mercedes@okiebenz.com Sent: Saturday, June 10, 2006 12:48 AM Subject: Re: [MBZ] '92 300E AC compressor in '87 300TD? Uh oh, it says it's a 10 PA 17C. Is that bad? Should be interchangeable. Is it a Nippondenso 10P15? The 10 is the number of pistons (actually five double-ended ones), the 15/17 is the capacity in some units. There are smaller ones too. If it fits, and the speed sensor is compatible, it ought to work. -- Jim
Re: [MBZ] '92 300E AC compressor in '87 300TD?
What does the speed sensor do? Tells the system the RPM of the compressor. Used by the serpentine belt protection system to detect a locked-up compressor, which disengages the clutch to protect the (single) belt, in theory keeping the water pump going thus protecting the engine from destruction. Do '83 300D Turbos have them? No; no serpentine belt: no speed sensor. (Though it wouldn't hurt to have one on the compressor, it just wouldn't be used.) Are they part of the compressor? Yes. -- Jim
Re: [MBZ] '92 300E AC compressor in '87 300TD?
That's a larger capacity (173 cc) compressor that was installed in late '80s 107s and larger 126s. The 10P15 has 153 cc capacity. If it fits, I think it should work. It should be noted that certain 80's Camry's use a 10P15 (I think), with speed sensor, so they can be a source of used replacements if you're into cheap repairs (as I am). -- Jim
Re: [MBZ] Need help with Power Steering Issues
On Jun 10, 2006, at 6:52 AM, Wakin's wrote: Do I have the right hose, and should fluid be coming out? If fluid is supposed to come out, anyone have any ideas why mine doesn't? Thanks in advance, Dave Wakin From your description, it seems you have the correct hose. It does come directly from steering gear-box doesn't it? It's odd that no fluid finds its way to the return. If little or no fluid gets pumped, little or nothing can come out. perhaps the filter is plugged and fluid thick. I've come across several MBs with stiff steering where the cure was a fluid and filter change. I generally opt for the dilution method of change ie; draw fluid out, remove filter and leave it out, add fluid, run/drive for a little while, draw fluid out etc until your satisfied that it has all clean fluid then install filter, top-off and go. I repeat the process 4-5 times using Amsoil synthetic trans fluid (can't find M-1 ATF around here). Another thought is that the return line is swollen internally due to improper fluid or additives, causing a restriction. I use a large hypodermic syringe and found the rubber on the plunger swollen weeks after I used it to change my friends PS fluid (which was acting up) in a 1986 420SEL . Johnny B. I Mac Therefore I am
Re: [MBZ] '92 300E AC compressor in '87 300TD?
Jim Cathey wrote: That's a larger capacity (173 cc) compressor that was installed in late '80s 107s and larger 126s. The 10P15 has 153 cc capacity. If it fits, I think it should work. It should be noted that certain 80's Camry's use a 10P15 (I think), with speed sensor, so they can be a source of used replacements if you're into cheap repairs (as I am). The Nippondensu compressors on Toyotas that I've seen DIDN'T have speed sensors (although perhaps some do). Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
[MBZ] More thoughts on driving.
The discussion of the faster Mercedes, including the Finnish mods reminds me of something I was thinking of last night. I'd taken a buddy out for a bachelor night since I'll miss his bachelor party and finally had a chance to really open up my 190D 2.2l 5spd. I was following a guy in an Audi A6 at 85-90mph (I still don't know what the top is on that car) and I was reminded of a time in my 240D I was following at guy in IIRC an old Carolla at about 80mph passing EVERYBODY, including, much to my surprise, a Ferrari of some sort. I'm sure that guy was worried about driving a cop magnet while I didn't particularly care... Most every day on my way home from work now I pass a (I think) 500SE. Its driven by an asian family of slow drivers. I usually pass them where RT2 and 495 meet, its a long hill and I'm in the passing lane in 4th with the pedal to the floor for a good italian tuneup. The speed limit is 55mph, traffic is going 70mph and heres this w126 over in the right lane chugging along. One time I was curious and I got in behind them, 50mph... I know that car could SMOKE mine any day of the week but I suspect they are trying to maximize gas mileage and decrease wear. I'm maximizing getting home and cleaning out the engine! Anyway its not always the car as much as the driver... -Curt __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com From [EMAIL PROTECTED] Sat Jun 10 15:05:47 2006 Received: from mxa.windwireless.net ([199.164.167.40]) by server8.arterytc8.net with esmtp (Exim 4.52) id 1Fp520-Fs-LF for Mercedes@okiebenz.com; Sat, 10 Jun 2006 15:05:45 + Received: from dogear.com (jimc.progress.wi-fi.windwireless.net [206.63.94.197] (may be forged)) by mxa.windwireless.net (8.12.9/8.12.9) with ESMTP id k5AF6Ojj008051 for Mercedes@okiebenz.com; Sat, 10 Jun 2006 08:06:24 -0700 Date: Sat, 10 Jun 2006 08:05:37 -0700 Content-Type: text/plain; charset=US-ASCII; format=flowed Mime-Version: 1.0 (Apple Message framework v553) From: Jim Cathey [EMAIL PROTECTED] To: Mercedes Discussion List Mercedes@okiebenz.com Content-Transfer-Encoding: 7bit In-Reply-To: [EMAIL PROTECTED] Message-Id: [EMAIL PROTECTED] X-Mailer: Apple Mail (2.553) X-Virus-Scan: smtp-vilter X-SMTP-Vilter-Version: 1.1.0rc2 X-SMTP-Vilter-Backend: Clam AntiVirus Daemon (clamd) X-SMTP-Vilter-Status: clean X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0rc4 (mxa.windwireless.net [199.164.167.40]); Sat, 10 Jun 2006 08:06:24 -0700 (PDT) X-Antivirus-Scanner: Clean mail though you should still use an Antivirus Subject: Re: [MBZ] '92 300E AC compressor in '87 300TD? X-BeenThere: Mercedes@okiebenz.com X-Mailman-Version: 2.1.6 Precedence: list Reply-To: Mercedes Discussion List Mercedes@okiebenz.com List-Id: Mercedes Discussion List mercedes_okiebenz.com.okiebenz.com List-Unsubscribe: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com, mailto:[EMAIL PROTECTED] List-Archive: http://okiebenz.com/pipermail/mercedes_okiebenz.com List-Post: mailto:Mercedes@okiebenz.com List-Help: mailto:[EMAIL PROTECTED] List-Subscribe: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com, mailto:[EMAIL PROTECTED] X-List-Received-Date: Sat, 10 Jun 2006 15:05:48 - The Nippondensu compressors on Toyotas that I've seen DIDN'T have speed sensors (although perhaps some do). It's the Camry's that have the speed sensor. (Or some of them.) I've never seen a regular Toy that had it. -- Jim
[MBZ] 190D update
While I feel like typing I thought I'd give an update on my 190D. When I first got it on cold startup it acted sort of odd, it'd start but idle really low for maybe 1/2 second and then come up to normal idle speed. Warm starts were fine. Now after around 7,000 miles 6,000 of that with Mobil 1 and most of it at full throttle that problem is pretty much gone, hit the key and its idling. Power has increased noticably and I ran a plot yesterday that shows a nice fuel mileage increase from around 34 average to 37+. We're going from MA to PA for a wedding next weekend and I plan to change the oil right after we get back, my theory being that the long highway run will help burn off more carbon to clean out. In the 6,000 miles I've added about 1/2 quart of oil wost of which I expect is because of pulling a sample for analysis. I still need to replace the passenger seat bottom with one Fred Moir gave me and figure out how to put in the antenna seal I bought from Rusty but overall I'm quite happy. Oh my wife had new tires put on it and had them nitrogen inflated, I can tell you I definately notice absolutely no difference. Of course the new tires are nice as they don't hydroplane so bad and don't squirm all over the road like the bad old ones do -Curt '85 190D Dory 240kmi __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com From [EMAIL PROTECTED] Sat Jun 10 15:27:48 2006 Received: from rwcrmhc11.comcast.net ([204.127.192.81]) by server8.arterytc8.net with esmtp (Exim 4.52) id 1Fp5NL-00020S-3N for Mercedes@okiebenz.com; Sat, 10 Jun 2006 15:27:47 + Received: from hannah (c-68-61-206-44.hsd1.mi.comcast.net[68.61.206.44]) by comcast.net (rwcrmhc11) with SMTP id 20060610152726m1100hc22ie; Sat, 10 Jun 2006 15:27:32 + Message-ID: [EMAIL PROTECTED] From: Ralph W [EMAIL PROTECTED] To: Mercedes Discussion List Mercedes@okiebenz.com References: [EMAIL PROTECTED] [EMAIL PROTECTED] Date: Sat, 10 Jun 2006 11:27:22 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 X-Antivirus-Scanner: Clean mail though you should still use an Antivirus Subject: Re: [MBZ] Summer tire recommendation W124 16 X-BeenThere: Mercedes@okiebenz.com X-Mailman-Version: 2.1.6 Precedence: list Reply-To: Mercedes Discussion List Mercedes@okiebenz.com List-Id: Mercedes Discussion List mercedes_okiebenz.com.okiebenz.com List-Unsubscribe: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com, mailto:[EMAIL PROTECTED] List-Archive: http://okiebenz.com/pipermail/mercedes_okiebenz.com List-Post: mailto:Mercedes@okiebenz.com List-Help: mailto:[EMAIL PROTECTED] List-Subscribe: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com, mailto:[EMAIL PROTECTED] X-List-Received-Date: Sat, 10 Jun 2006 15:27:50 - The tire size for the 16 wheels are 215/55R16 Ralph - Original Message - From: [EMAIL PROTECTED] To: Mercedes@okiebenz.com Sent: Saturday, June 10, 2006 4:18 AM Subject: Re: [MBZ] Summer tire recommendation W124 16 what was the original tire size? guessing maybe a 195 65 15? Harry 69 280 SEL 120,000 Miles 72 350SL 108,000 Miles 2004 VW Passat 4 Motion 1999 Mazda Miata
Re: [MBZ] DIY AC repair in modern times
The most common failures are leaks, which are fairly easy to fix, if not cheap, but a compressor failure these days almost always means changing the condenser to get rid of all the crap sitting in it -- which stuff will promptly wreck a new compressor. My friend Hans always installs a filter if he has to put a new compressor on, and they still sometimes croak from dirt. It's nearly impossible to flush the evaporators since they are multi-coil units, and the partially clogged coils won't flush. On Jun 10, 2006, at 12:07 AM, Jim Cathey wrote: Is there a max pressure at Idle? The modern AC system is deceptively simple. It's rather elegant engineering, which means that it's more complex than it appears. It's all about fluid dynamics, with phase changes thrown in, and a lot of weird plumbing. Testing is done by pressure gauges, thermometers, and inference, yet an important variable is the amount of fluid flow, both gaseous and liquid, for which there is no direct measurement. In electrical terms, it's like trying to diagnose a battery/starter problem using only a voltmeter and your brain. That's what most of us do and it certainly works, but it's _so_ much easier to _also_ use an ammeter to measure the current draw rather than trying to infer it. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 190D update
Ah, the good ol Itialian Tunueup: -- drive the stuffings out of it, and it runs better. The worst possible thing to do with a Benz diesel is putt around town in it -- carbons up the prechambers something terrible. I change Mobil 1 oil on 6000 mile intervals.. Peter
Re: [MBZ] DIY AC repair in modern times
reason I like to do it then! That, and using test refrigerant instead of R12 means it's not cookbook time, you have to tinker with the (under-)charge. -- Jim Jim, what is test refrigerant is there a FAQ ? if you have been over and over this is it in the archives ? George Larribeau Dallas Texas 1985 300SD 170K 1987 HD FLHTC 86K 1984 Motoguzzi Cal -2 80K 1972 Motoguzzi Ambassador LOTS 1965 Chevy C-10 pick up truck lots of miles 3rd small block ..(Extra Ugly,but runs) 1993 BMW 323i 110K (Wife's Car) 1967 BMW R50/2 (Wife's MC, currently in a Basket)
Re: [MBZ] DIY AC repair in modern times
In electrical terms, it's like trying to diagnose a battery/starter problem using only a voltmeter and your brain. That's what most of us do and it certainly works, but it's _so_ much easier to _also_ use an ammeter to measure the current draw rather than trying to infer it. Thank you I am an electronics type ... GL
Re: [MBZ] Electronic AC servo on sale
As noted earlier the Unwired Tools servo replacement that Performance currently has on sale is a closeout of an earlier than current version. Should work well enough but installation is a bit more involved and iirc it lacks some of the programability of the current version. If anyone's feeling tempted by this deal it might be wise to go to the Unwired website and download the manuals for the current (I4) immediately previous (Hx) versions. There may be some documentation there that details the differences as well. I just don't remember. Also, expect the installation to take considerably more than 2 hrs the first time around, especially if you suspect the existence of vacuum leaks. joe
Re: [MBZ] DIY AC repair in modern times
Jim, what is test refrigerant It is what I use to test a system before committing scarce and expensive R12 to it. (None of my cars has sufficiently 'passed' the test to earn my only three cans of R12.) It's a mix of isobutane and propane, and there are commercial formulations of this. Costs about $7 per full* charge DIY. * full as in fully functional, but hydrocarbon blends are usually quite undercharged when compared to an R12 installation. This is to control the pressures, since propane (R290) has an R22-like pressure curve. This makes them very sensitive to minor leakage, with the usual result being a need for an annual charge. Big deal, so I have to spend $7/year to keep AC working in each car! According to the EPA (and just how does this policy result in a protected environment?) it is not legal to use this refrigerant or anything like it in the US. The political machinations behind this policy are both frightening and disgusting, I'll leave it to you to surf for it on the web. is there a FAQ ? if you have been over and over this is it in the archives ? Only the two links I gave before: http://cathey.dogear.com/efair.html http://cathey.dogear.com/cwair.html -- Jim
Re: [MBZ] What tire size are people running with 15-inch rims, on the older cars?
why would i be running 205/65 on my 15 bundts if it weren't what to do? swine On 6/9/06, Steve MacSween [EMAIL PROTECTED] wrote: on 6/9/06 3:21 PM, Marshall Booth at [EMAIL PROTECTED] wrote: Steve MacSween wrote: Just curious... plan to put some 15 rims I have, onto my w126, and I'd like to try some 205/65-15 tires I have lying around here. IIRC, conventional wisdom has it that you should use 70-series, which is what I had with the 15 Mille Miglia rims on my w116 SD. The proper tire size IS 205/65x15. Marshall Thanks Marshall, I agree completely but for some reason the local MBz braintrust thinks they are too low-section. 205/65 it shall be. Mac ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] DIY AC repair in modern times
Isobutane/propane refrigerant will work very nicely. However, if you have a leak, air leaks in while the hydrocarbons leak out, and you can get an explosive mixture fairly easily. The result can be a detonating compressor (don't laugh, I've seen it). You also risk a large explosion if you have an accident that punctures the condenser. You must indeed charge by pressure, adding 2.2 lbs of propane will definitely burst something. When whatever it is ruptures, you can get a propane/air explosion. R134a isn't much more expensive, is inert, and conversion isn't that hard. Peter
Re: [MBZ] What tire size are people running with 15-inch rims, on the older cars?
Diameter is probably too small, speedo and odo are off. Won't actuallyt hurt anything, but the may be the wrong size. Peter
Re: [MBZ] DIY AC repair in modern times
If you convert to 134-A can you then go back to R-12 using your 134-A set of gauges? R-134-A doesn't do a very good job of cooling my MBs. I'm currently trying to find a second leak in an '83 300D. The first one was the pressure switch on top of the dryer which is now fixed. I'm using UV dye to look for the leaks, and I've wasted four cans of Freon trying to find it under the hood. Can someone tell me the best way to find it under the dash since that must be where it is? Thanks, Gerry Archer '83 300D and 240D - Original Message - From: Peter Frederick [EMAIL PROTECTED] To: Mercedes Discussion List Mercedes@okiebenz.com Sent: Saturday, June 10, 2006 3:36 PM Subject: Re: [MBZ] DIY AC repair in modern times Isobutane/propane refrigerant will work very nicely. However, if you have a leak, air leaks in while the hydrocarbons leak out, and you can get an explosive mixture fairly easily. The result can be a detonating compressor (don't laugh, I've seen it). You also risk a large explosion if you have an accident that punctures the condenser. You must indeed charge by pressure, adding 2.2 lbs of propane will definitely burst something. When whatever it is ruptures, you can get a propane/air explosion. R134a isn't much more expensive, is inert, and conversion isn't that hard. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.3/360 - Release Date: 6/9/2006
Re: [MBZ] Salvage titles
[EMAIL PROTECTED] wrote: Why do salvage titles scare people so much? How do insurance companies feel about insuring salvage vehicles? Liability insurance is usually no problem. If you want collision or comprehensive, you may have to shop around. Some companies will outright refuse to put that kind of insurance on a salvage vehicle; others will want it inspected first, and may want photographs to put on file.
Re: [MBZ] DIY AC repair in modern times
If you convert to 134-A can you then go back to R-12 using your 134-A set of gauges? Not easily, and not legally. The fittings are all wrong for filling. The oils are mutually incompatible. I back-converted one of our 560 SL's, the fitting adapters just unscrewed. Getting that evil POS oil out of the compressor was difficult. I didn't do the complete flush before putting in mineral oil. Should have, but was getting tired, and you can't flush the drier, nor can you flush the evaporator without removing the expansion valve. R-134-A doesn't do a very good job of cooling my MBs. No, it doesn't. For a variety of reasons. (It perhaps could be made to work better, but longevity is also an issue.) I'm currently trying to find a second leak in an '83 300D. The first one was the pressure switch on top of the dryer which is now fixed. I'm using UV dye to look for the leaks, and I've wasted four cans of Freon trying to find it under the hood. This is a perfect example of where/why I use a test refrigerant. As a bonus, if you smell gas in the passenger compartment you know you have an underdash leak. Can someone tell me the best way to find it under the dash since that must be where it is? UV dye? Soapy water? Smell? Process of elimination? -- Jim
Re: [MBZ] DIY AC repair in modern times
All the connections are sealed with o-rings, and there are four on the expansion valve. I would guess that is where your leak is, and it may be slow enough that not much oil will blow out with the freon. I replace all the 0-rings with new green ones when changing a system over. Don't forget to check the compressor, too -- the hose junction on the later models tends to leak, as does the ffront seal and the piping manifold to compressor body on the Nippondenso conpressors. On my TE, the leak at the manifold to body was the high side o-rings, and the oil was on the block side, invisible until I removed the compressor.\ You can go back, but you really need to flush the oil out properly. Most undercooling problems are a result of overcharging -- R134a is lighter than R12, only put in 80 to 85% of the weight -- otherwise you get high suction side pressures and low cooling. Peter
Re: [MBZ] DIY AC repair in modern times
Isobutane/propane refrigerant will work very nicely. However, if you have a leak, air leaks in while the hydrocarbons leak out, and you can get an explosive mixture fairly easily. I do not see how a charged system can get _any_ air in it. I have never observed low-side pressure that dropped below atmospheric pressure if it was at all working correctly. If you let it get extremely low on charge, perhaps. But it would have stopped cooling long before this point, and should have tripped the safety switch anyway. It's not like you wouldn't have had your warning. Water doesn't flow uphill, after all. You also risk a large explosion if you have an accident that punctures the condenser. A rapid decomp of an R134A-filled condensor is also quite flammable. The oil spray is the big component, but you add the extremely toxic combustion products of the somewhat-combustible (!) refrigerant to the party. R134a isn't much more expensive, is inert, and conversion isn't that hard. All somewhat true. It's the nasty side-effects that are the problem. (It doesn't work well, it doesn't last long, the required oils are _not_ inert, and correcting it afterwards is made considerably more difficult.) -- Jim
Re: [MBZ] DIY AC repair in modern times
Don't forget to check the compressor, too -- the hose junction on the later models tends to leak, as does the ffront seal and the piping manifold to compressor body on the Nippondenso conpressors. The ND compressor has 6 O-rings, four at the manifold/body interface and two more where the hoses attach. There was a tremendous leak at the manifold on our latest 560 SL, where the _black_ O-rings of the 'converted' system were chewed. (It looked like mechanical rather than chemical degradation, but I've no experience with that to compare to.) It is an extremely obvious bit of crappy conversion, no doubt done at full price. Most undercooling problems are a result of overcharging -- R134a is lighter than R12, only put in 80 to 85% of the weight -- otherwise you get high suction side pressures and low cooling. Also, unless you've removed all the mineral oil (extremely difficult to do) you've left a large indigestible lump of oil in the system, where it can puddle and coat things to prevent heat transfer. It's immiscible in R134A, which is why you have to replace the oil when you convert. Most conversions, of course, don't replace the oil --- they just _add_ more new oil. -- Jim
