Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 07-03-2002, 12:06 AM
Registered User
Join Date: May 2001
Location: Portland, OR
Posts: 29
Lambda Crisis

Tonight I was going to adjust my '86 300E's mixture setting slightly rich to help smooth my idle. After reading the DIY article on engine controls and reading all the posts regarding lambda adjustments, I thought I was prepared.

Here's what happened. Hooked my meter to X11, diagnostic socket pin#3. Key on, meter read 30%. (coolant temp sensor fault I think). Started engine, ran fine. Meter read 50%. After warmup duty cycle fluctuated about 50-54%. Shut engine off, turned adjustment screw right, about a quarter turn. I did press down and engage adjustment screw below. No change in duty cycle. Re-adjusted screw another 1/4 to 1/3 turn, started engine and it ran extreamly rough. Duty cycle went down into to 20s.(Too rich). Tried to correct by turning screw left to lean, now car wont start at all.

I remember reading members' posts about overturning and being sorry they ever touched the adjustment screw. Well that's me tonight!

Any ideas on how to return my '86 300E to its former running state? There were no other symptoms before this, other than a slightly rough idle. Car ran like a champ. Car won't start now and I am in Lambda Crisis! Help!

Thanks in advance,

'86 300E
Reply With Quote
Old 07-03-2002, 02:00 PM
Registered User
Join Date: Dec 2001
Posts: 565

I suspect you first read what Benzmac had to say in the following posts. Thought I'd pass it on.

starting my 300e

300E air flow sensor

Last edited by Mike Richards; 07-03-2002 at 02:07 PM.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 05:51 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page