[uucdigest] Wednesday, February 26 2003 Volume 03 : Number 6151
_________________________________________________________________ | | Search the ARCHIVES: | http://www.mail-archive.com/[EMAIL PROTECTED] | | Visit Richard Nott's Ultimate BMW Database: | http://www.bmwdatabase.com | | For all available Digest commands including unsubscribe/subscribe, | visit the BMW UUC Digest page: http://www.uucdigest.com | | Send SUBMISSIONS to [EMAIL PROTECTED] | Complaints? Send 'em to [EMAIL PROTECTED] if you must. | Technical Problems? Send 'em to [EMAIL PROTECTED] |__________________________________________________________________ In this BMW UUC Digest: Re: [uuc] E34 M5 Engine Diagnostic (Long) Re: Re: [uuc] Re: Custom Chip Programming/OFFER of help Re: [uuc] Re: Custom Chip Programming/OFFER of help [uuc] E34 M5 Engine Diagnostic (Long) [uuc] Latest in Custom Gauge Faces [uuc] Wanna trade your $50,000. for a mangled bicycle? Re: [uuc] E34 M5 Engine Diagnostic (Long) [uuc] RE: E34 M5 Engine Diagnostic (Long) ---------------------------------------------------------------------- Date: Wed, 26 Feb 2003 14:08:40 -0800 (PST) From: Jason Knight <[EMAIL PROTECTED]> Subject: Re: [uuc] E34 M5 Engine Diagnostic (Long) I'd suggest starting with the simplest solution first - - drain the gas and put some more in. Of course you'd want to drain it into some vessel from proper disposal. Just judging from your write up, this is the last item that was changed before the issue began. Then again, I work on computers that are generally no more than a year old, not cars. Good luck! Jason - --- kjk <[EMAIL PROTECTED]> wrote: > I have a problem with my M5 that just suddenly > appeared. <snip> > I got normal gas mileage > during the trip and noticed nothing unusual. I put > in > a half tank of 100 octane (just to avoid any > detonation, we get 91 oct. here in Calif.) and got > the > car ready for its first session. I was on my warm up > lap at only about 4500rpm when I noticed the car > simply would not rev and was really struggling. __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, more http://taxes.yahoo.com/ ------------------------------ Date: Wed, 26 Feb 2003 17:20:50 -0500 From: "Michael McCoy" <[EMAIL PROTECTED]> Subject: Re: Re: [uuc] Re: Custom Chip Programming/OFFER of help <snip all kinds of good info> > It'll put some ideas in your head too - how about adding a DIY wideband O2 sensor and data logging to your project? I've been looking into this too. For now, my tuning needs are such that *as long as its not lean* I'm ok. and the regular O2 is ok enough for that. If I get the ability to tune fuel maps, then such a device would be an extremely valuable tool. most seem to be in the $300-$400 range. the "professional" ones are closer to $1k though. thanks for the info. - -Michael McCoy > > Good luck, > Brian > 94 325ic with unmolested DME > 94 Mustang Cobra, supercharged with DIY tune and datalogging ------------------------------ Date: Wed, 26 Feb 2003 15:31:53 -0500 (EST) From: Brian Daley <[EMAIL PROTECTED]> Subject: Re: [uuc] Re: Custom Chip Programming/OFFER of help http://www.diy-wb.com/ Approximately $225 for parts (+ whatever components you mess up before refining your soldering technique). Of course as you noted, it's not very useful until you're able to alter your fuel maps. Brian - -------Original Message------- From: Michael McCoy <[EMAIL PROTECTED]> Sent: 02/26/03 05:20 PM To: [EMAIL PROTECTED] Subject: Re: Re: [uuc] Re: Custom Chip Programming/OFFER of help > > <snip all kinds of good info> > It'll put some ideas in your head too - how about adding a DIY wideband O2 sensor and data logging to your project? I've been looking into this too. For now, my tuning needs are such that *as long as its not lean* I'm ok. and the regular O2 is ok enough for that. If I get the ability to tune fuel maps, then such a device would be an extremely valuable tool. most seem to be in the $300-$400 range. the "professional" ones are closer to $1k though. thanks for the info. - -Michael McCoy > > Good luck, > Brian > 94 325ic with unmolested DME > 94 Mustang Cobra, supercharged with DIY tune and datalogging > ------------------------------ Date: Wed, 26 Feb 2003 18:33:46 -0500 From: "Andy Messer" <[EMAIL PROTECTED]> Subject: [uuc] E34 M5 Engine Diagnostic (Long) Standard silly questions: Fuel filter plugged? I would hope upon rebuild it was replaced, but I have to ask. Same for air filter. Injectors test OK? If you haven't done it, there's a guy who'll service them for $11/inj. Any vacuum leaks? When you checked fuel pressure, did you start the engine or just run the fuel pump? Did you happen to notice how long it took for the pressure to build? No load (ie, engine off) fuel pressure wouldn't be as hard to achieve as with the engine running. If the fuel filter is plugged, I would think pressure could still eventually get to the fuel rail, but with the engine consuming some of that pressure, it might not be able to keep up. I had a similar problem many moons ago on my 84 318i. The engine just wouldn't rev past about 3500RPM. Since it was cold and I was in Michigan (Away from tools), I took it to a dealer. When the tech removed the fuel filter and held it upright, he said molasses poured out. Yech!!! Filter replaced, problem solved. Andy 88iX - ------------------------------ Date: Wed, 26 Feb 2003 13:46:11 -0800 (PST) From: kjk <[EMAIL PROTECTED]> Subject: [uuc] E34 M5 Engine Diagnostic (Long) <snip> I was on my warm up lap at only about 4500rpm when I noticed the car simply would not rev and was really struggling. Yesterday, we checked fuel pressure at the hose leading up to the fuel injection rail, the one down on the side of the block under the brake master cylinder. 47 lbs. Then we dropped the cat to see if the car would start to run better. No improvement. While we were down there we put a new O2 on it. Kevin Kelly //M less again ------------------------------ Date: Wed, 26 Feb 2003 16:29:05 -0800 (PST) From: Neil Deshpande <[EMAIL PROTECTED]> Subject: [uuc] Latest in Custom Gauge Faces Scott: With only 'white' women on there, not only is it sexist, but also politically incorrect. <grin>. Perhaps a line drawing would have been the way to go? Oh well, I like the stock gauges anyway. Neil Deshpande *** [EMAIL PROTECTED] New. slightly sexist twist on custom gauge faces: <http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2405359568&category=6755> ------------------------------ Date: Wed, 26 Feb 2003 17:14:55 -0800 From: jkerouac <[EMAIL PROTECTED]> Subject: [uuc] Wanna trade your $50,000. for a mangled bicycle? Wanna trade your $50,000 BMW for a mangled bicycle? To participants of this past Sunday's rally on the SF Peninsula: Did you notice those bikers pedaling their 1/2 horsepower finely developed human powered engines and 30 speed carbon fiber and titanium Italian powertrains up the 5 miles and 18% grades of West Alpine Road when the rally cruised by downhill on Sunday? This posting is for those rallyists who were busy rather than to pay attention to the road they were driving on. We encountered several rude BMWs being driven arrogantly as if bicycles were fleas to flick off the road so BMW drivers can yahoo it offline through mountain turns hogging both sides of the pavement when they misread the line of a curve. Would you have driven like that if you knew you were driving by bicyclists who might personally know you? One of those cars with Allison BMW plates is particularly suspect. When I got back to my //M3 after the ride at the parking lot, I was almost embarrassed to be seen driving a BMW. If those few rotten apples who give a bad name to all the rest of us respectful, safety minded BMW driving enthusiasts, please remember one thing: If you run me or any of my friends down off our bicycles, next time it will be us driving the new BMWs, and you riding the bicycle. But in your case, the bicycle will not be by choice, but because after we sue your ignorance for every penny your got, a cheap bike will be all you'll have any money left to afford. I apologize to the majority of you who were not the rotten apples on Sunday's rally. Sadly the actions of a few assholes make a bad name for everyone else. The San Mateo County sheriff's office is very sympathetic to bicyclists and has agressively persued charges and prosecution against agressive motorists who endanger bicyclists' safety. If any of you would like to be next, I'll be glad to give them your license plate numbers. Having once been run down by a car off my bicycle, I assure you that this is true. Because only a few months after I was run down is when I got my then new //M3. Like the one bumper sticker on my car says, "Watch for Bicyclists". After all, it may be your own legal as you save, too. Thank You. 'jk ------------------------------ Date: Wed, 26 Feb 2003 20:14:41 -0800 From: [EMAIL PROTECTED] Subject: Re: [uuc] E34 M5 Engine Diagnostic (Long) Kevin: I would look at the cap and rotor, then move onto the plugs. Rosario 88 M5 - ----- Original Message ----- From: "kjk" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, February 26, 2003 1:46 PM Subject: [uuc] E34 M5 Engine Diagnostic (Long) > I have a problem with my M5 that just suddenly > appeared. The week before the problem, which I will > get to, I did notice some slight hesitation or surging > on acceleration at part throttle. It only happened > once or twice. > > I drove the car about 180 miles, never really using > full throttle as it was the freeway. I was on my way > to the track by the way. I got normal gas mileage > during the trip and noticed nothing unusual. I put in > a half tank of 100 octane (just to avoid any > detonation, we get 91 oct. here in Calif.) and got the > car ready for its first session. I was on my warm up > lap at only about 4500rpm when I noticed the car > simply would not rev and was really struggling. I did > one lap and exited using lots of bad words (how often > is it sunny and only 65 degrees at Thunderhill). A > fellow BMW owner (thank you Jim Bassett) had a code > reader and it said the O2 sensor was throwing a fault > code. Another BMW owner (SSF Motorsports) simply gave > me an M3 O2 sensor to try which we attempted to splice > into the much longer M5 cord. That made no > difference. Then some people suggested just > disconnecting the 02 which didn't change anything > either. I also left the battery unplugged for a while > to try to clear the codes. At one point it did seem to > get better and driving around the paddock it seemed > smooth after struggling to come off idle. However, it > then got progressively worse and the car would barely > idle. Another guy suggested the cat might be gone > because, in his words, "it sounds like a potato is in > the exhaust pipe". > > Anyway, not wanting to risk the drive home, we stuck > it on a trailer and I drove it 180 miles home > Saturday. I then turned around and drove the trailer > back to the owner on Sunday and hitched a ride home > with a buddy. > > Yesterday, we checked fuel pressure at the hose > leading up to the fuel injection rail, the one down on > the side of the block under the brake master cylinder. > 47 lbs. Then we dropped the cat to see if the car > would start to run better. No improvement. While we > were down there we put a new O2 on it. > > After charging the battery a bit, we were able to get > it to hold revs above idle, although there was lean > backfire through the intake (or so my more > knowledgeable friend says). We are going to do another > code read and see if anything new pops up and maybe > pull the plugs to have a look at them. Suggestions > before I tow it to the shop? It has 4,000 plus miles > on a rebuild and was running fine before this. It > seems to be an ignition, fuel or timing issue. > Obviously, if it is related to the rebuild the shop > will have to fix it but mechanically the engine seems > fine and there have been no distressing noises. > > Kevin Kelly > //M less again > > > > __________________________________________________ > Do you Yahoo!? > Yahoo! Tax Center - forms, calculators, tips, more > http://taxes.yahoo.com/ ------------------------------ Date: Wed, 26 Feb 2003 17:58:53 -0800 From: russelc <[EMAIL PROTECTED]> Subject: [uuc] RE: E34 M5 Engine Diagnostic (Long) Maybe check the reference sensor on the crank hub. This may have come loose or failed? Also check the idle/WOT switch for correct operation. Umm, your car is a '91 and is OBD I? RussC > Date: Wed, 26 Feb 2003 13:46:11 -0800 (PST) > From: kjk <[EMAIL PROTECTED]> > Subject: [uuc] E34 M5 Engine Diagnostic (Long) > > I have a problem with my M5 that just suddenly > appeared. The week before the problem, which I will > get to, I did notice some slight hesitation or surging > on acceleration at part throttle. It only happened > once or twice. > > I drove the car about 180 miles, never really using > full throttle as it was the freeway. I was on my way > to the track by the way. I got normal gas mileage > during the trip and noticed nothing unusual. I put in > a half tank of 100 octane (just to avoid any > detonation, we get 91 oct. here in Calif.) and got the > car ready for its first session. I was on my warm up > lap at only about 4500rpm when I noticed the car > simply would not rev and was really struggling. I did > one lap and exited using lots of bad words (how often > is it sunny and only 65 degrees at Thunderhill). A > fellow BMW owner (thank you Jim Bassett) had a code > reader and it said the O2 sensor was throwing a fault > code. Another BMW owner (SSF Motorsports) simply gave > me an M3 O2 sensor to try which we attempted to splice > into the much longer M5 cord. That made no > difference. Then some people suggested just > disconnecting the 02 which didn't change anything > either. I also left the battery unplugged for a while > to try to clear the codes. At one point it did seem to > get better and driving around the paddock it seemed > smooth after struggling to come off idle. However, it > then got progressively worse and the car would barely > idle. Another guy suggested the cat might be gone > because, in his words, "it sounds like a potato is in > the exhaust pipe". > > Anyway, not wanting to risk the drive home, we stuck > it on a trailer and I drove it 180 miles home > Saturday. I then turned around and drove the trailer > back to the owner on Sunday and hitched a ride home > with a buddy. > > Yesterday, we checked fuel pressure at the hose > leading up to the fuel injection rail, the one down on > the side of the block under the brake master cylinder. > 47 lbs. Then we dropped the cat to see if the car > would start to run better. No improvement. While we > were down there we put a new O2 on it. > > After charging the battery a bit, we were able to get > it to hold revs above idle, although there was lean > backfire through the intake (or so my more > knowledgeable friend says). We are going to do another > code read and see if anything new pops up and maybe > pull the plugs to have a look at them. Suggestions > before I tow it to the shop? It has 4,000 plus miles > on a rebuild and was running fine before this. It > seems to be an ignition, fuel or timing issue. > Obviously, if it is related to the rebuild the shop > will have to fix it but mechanically the engine seems > fine and there have been no distressing noises. > > Kevin Kelly > //M less again ------------------------------ End of [uucdigest] V3 #6151 *************************** | | In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. |________________________________________ | Please visit these UUC-approved BMW parts vendors/service providers: | (listed alphabetically) | | Autoscope-Motorsports - http://www.autoscope-motorsports.com | |==================================================== | | Koala MotorSport . 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