Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-21-2017, 03:57 PM
Registered User
 
Join Date: Jan 2009
Posts: 146
will not idle after reaching operating temp

1992 190E 2.6. Car starts and runs fine, but after car warms up it doesn't idle. It will restart and stumble, but runs good with increasing RPMs. Help

Reply With Quote
  #2  
Old 02-21-2017, 04:59 PM
Daantjie
 
Join Date: Nov 2014
Location: Vancouver, BC, Canada
Posts: 96
Points to idle air control.
Reply With Quote
  #3  
Old 02-21-2017, 05:24 PM
Registered User
 
Join Date: Aug 2006
Posts: 725
The air flow sensor position indicator (potentiometer) might have a worn spot at the idle position. Put a voltmeter between pins 1 and 2 (brown and blue/black wires). With key on, engine off, press down slowly on the air flow plate and make sure the voltage goes smoothly with no sudden jumps up or down. If you have an autoranging meter it is best to disable that feature to prevent confusion when it changes ranges. I had the same symptoms on the '89 260E.
Reply With Quote
  #4  
Old 02-22-2017, 02:44 AM
Registered User
 
Join Date: May 2009
Posts: 274
Quote:
Originally Posted by dennish View Post
1992 190E 2.6. Car starts and runs fine, but after car warms up it doesn't idle. It will restart and stumble, but runs good with increasing RPMs. Help
Also make sure that all the HT components are in top condition and are MB original or, second best, Bosch/Beru. NOTHING else. Cheap, copper, non-resistor plugs too.

RayH
Reply With Quote
  #5  
Old 02-22-2017, 11:53 AM
Registered User
 
Join Date: Jan 2017
Posts: 72
I have the same issue on my 85 280ce. I'm running NGK plugs but I have a set of Bosch plugs as spares. I was told NGK is the best plug to run for this engine. What should I check on mine? The injection system was rebuilt along with the warm up regulator so I'm pretty sure it doesn't have anything to do with that.
Reply With Quote
  #6  
Old 02-22-2017, 12:53 PM
Registered User
 
Join Date: May 2009
Posts: 274
Quote:
Originally Posted by mbenz280ce View Post
I have the same issue on my 85 280ce. I'm running NGK plugs but I have a set of Bosch plugs as spares. I was told NGK is the best plug to run for this engine. What should I check on mine? The injection system was rebuilt along with the warm up regulator so I'm pretty sure it doesn't have anything to do with that.
Non-resistor whatever make. NGK works fine in mine, as do Bosch originals and Beru. Never tried Champion but they are listed my MB for my car.

RayH

Reply With Quote
Reply

Bookmarks

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:00 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page