Re: [MBZ] W124 Test Device for Idle Speed Control
Thanks Peter, Your evaluation sure makes sense - now, if I can find the Idle Control Valve ;-) Hopefully the pages I printed from the WSM will lead me to it. Thanks!! Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs Porsche Road Test http://members.rennlist.com/roadtest/ . - Original Message - From: Peter Frederick [EMAIL PROTECTED] To: Mercedes Discussion List mercedes@okiebenz.com Sent: Tuesday, October 31, 2006 7:20 PM Subject: Re: [MBZ] W124 Test Device for Idle Speed Control Clean the idle control valve and verify that you have no vacuum leaks -- this behavior is a almost always a result of the valve closing too much on coast due to a vac leak, then sticking shut as the engine speed comes down from the dirt. I doubt anything would show up on the diagnostics. The device you need is a LED with the ground provided by the test socket, I think. You count the flashes. Could be wrong, though, never used it. 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: 7.1.409 / Virus Database: 268.13.20/508 - Release Date: 10/31/2006
Re: [MBZ] W124 Test Device for Idle Speed Control
Larry: It's under the air filter housing up front, about half the size of a coke can, two wire connecter on the fore end and two large rubber hoses on the aft. Hoses are likely rock hard leaking. If the one from under the air flow meter horn (what the air filter housing goes on) pulls out from the rubber boot, you need boot, hoses, injector seals, and probably seals for the injector holders. Just did all the above except the holder seals, that's this weekend. Cured the rough idle, hard starts hot, stalling, and noise at cruise. Peter
Re: [MBZ] W124 Test Device for Idle Speed Control
This sounds like you're talking about CIS injection system parts, not Diesel injector seals, and probably seals for the injector holders.. Am I wrong, or are the systems very similar in the 60x engines now? On 10/31/06, Peter Frederick [EMAIL PROTECTED] wrote: Larry: It's under the air filter housing up front, about half the size of a coke can, two wire connecter on the fore end and two large rubber hoses on the aft. Hoses are likely rock hard leaking. If the one from under the air flow meter horn (what the air filter housing goes on) pulls out from the rubber boot, you need boot, hoses, injector seals, and probably seals for the injector holders. Just did all the above except the holder seals, that's this weekend. Cured the rough idle, hard starts hot, stalling, and noise at cruise. Peter -- OK Don, KD5NRO Norman, OK The Americans will always do the right thing... after they've exhausted all the alternatives. Sir Winston Churchill '90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager
Re: [MBZ] W124 Test Device for Idle Speed Control
Thanks Peter, I'll take a look - so far I have not found any of the hoses to be hard with age. The PO had many hoses in the engine compartment replaced not long before I bought it. He was chasing a problem I solved with long-distance driving. So, I may still have a loose hose - I could have knocked it off or perhaps it fell off. Thanks for the suggestions - I have a better idea about what to look for. Have been reading the Shop Manual section 07.1 that deals with he ELR system (Electronic Idle Speed Controller) and I really hope it's a loose hose as some of the various devices have expensive sounding names. Things like the Flywheel Engine Speed Sensor and ELR actuator, etc. Re-attaching a hose starts looking attractive pretty fast. ;-) Thanks again for the help - Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs Porsche Road Test http://members.rennlist.com/roadtest/ . - Original Message - From: Peter Frederick [EMAIL PROTECTED] To: Mercedes Discussion List mercedes@okiebenz.com Sent: Tuesday, October 31, 2006 8:36 PM Subject: Re: [MBZ] W124 Test Device for Idle Speed Control Larry: It's under the air filter housing up front, about half the size of a coke can, two wire connecter on the fore end and two large rubber hoses on the aft. Hoses are likely rock hard leaking. If the one from under the air flow meter horn (what the air filter housing goes on) pulls out from the rubber boot, you need boot, hoses, injector seals, and probably seals for the injector holders. Just did all the above except the holder seals, that's this weekend. Cured the rough idle, hard starts hot, stalling, and noise at cruise. 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: 7.1.409 / Virus Database: 268.13.20/508 - Release Date: 10/31/2006
[MBZ] W124 Test Device for Idle Speed Control
Howdy - I still have a idle problem - when driving and I let of the accelerator to stop for a light or whatever my idle will drop to ~450-500rpm for a few seconds before stabilizing. The WSM has a variety of things that might help. There's a connection next to the battery with a little cover - when the cover comes off there a pin connection numbered 1 thru 8. It's mentioned on p18 of 07.1-0010 and shown as X92 on p19. There's a sketch of it with test probbes in 3 ports - What I need to know is - where can I get the diagnostic thingie to read the fault codes? It's mentioned on p18. The test connector is called X92 or X11/4. It seems to be more a wiring rig than a electronic gadget (I think). Anyway, I'm still reading all 89 page of this section but there are definately more inputs for the idle speed than on the W123 cars. There's a flywheel speed sensor which also provides input to the ELR/ARA Control Unit (N8/1) or the Electronic Idle Speed Control Unit (N8) and an actuator (Y22) maintains constant idle rpm irrespective of engine load. It take some concentration to understand it as they mix gas and diesel systems as well as W140/W126/W201/W124 models - as well as years and nationalities so it's taking me a while to understand what I'm reading. Anyway, I need the test thing ;-) TIA - Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs Porsche Road Test http://members.rennlist.com/roadtest/ .
