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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-23-2003, 12:57 PM
Registered User
 
Join Date: Dec 2002
Posts: 31
Fast idle Question

I have a 1991 300E. It idles fast, but will come down to a normal idle speed when you goose the gas pedal and will then again go to a fast idle when you drive it. Then your able to kick it down again. I believe it is an adjustment in the mechanical linkage. Any suggestions on adjusting this linkage or any literatute on this subject. I've searched everywhere and can't seem to come up with an answer. Thanks
Reply With Quote
  #2  
Old 06-23-2003, 01:19 PM
Registered User
 
Join Date: Mar 2003
Location: Southern California
Posts: 2,036
Had the same problem with my 2.6. Turned out that the throttle position switch was not sending the idle signal. The fix was to partially disassemble the throttle linkage (the ball and socket joints down low), clean, lubricate, and adjust. The TPS is located under the fuel distributor at the end of the throttle shaft. It has three leads - idle signal, WOT signal, and ground and has a pigtail with a connector in the harness channel that runs transversely across the top of the manifold, so it is easy to disconnect and check for continuity of the correct pair at WOT and idle.

Also check that the microswitch on the top of the manifold sends the proper idle signal.

Duke
Reply With Quote
  #3  
Old 06-23-2003, 01:36 PM
Registered User
 
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
Had a similar problem with our '91 190E. Turned out to be a broken plastic adjuster on the linkage end of the cable. It would hang up, preventing the throttle from returning to proper idle position. Replaced the cable and cleaned the linkage, and it returned properly and consistently after that.

Steve
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 09:35 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, 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