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 11-30-2002, 05:18 AM
irieite's Avatar
Registered User
 
Join Date: Nov 2002
Posts: 157
Unhappy Warm Misfire '91 190e 2.3

From a cold start, it runs just fine for a couple minutes, after that, as if someone threw a switch, it goes into another mode and I get (what seems to be) a misfire. That is, it stutters when I try to rev it up in park, while in this "warm mode".

Additionally, it idles steady in park at around 1800 RPM, if I don't drive it and just let it warm up from cold. This differs from the up/down idle (between 0 and 1000 RPM) in park or neutral that I get after the car has been driven and fully warmed up.

I dunno, it's strange.. This is about as accurate of a description of the problem that I can give. Hopefully someone who has had a similar problem can help as I've got to get this thing smogged soon.
Reply With Quote
  #2  
Old 12-01-2002, 10:28 AM
Registered User
 
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
First, I would check rubber. If any of the hoses in the idle air bypass circuit are 'leaky' (hardened with age or cracked), the idle air flow will not be properly metered, and the mixture will suffer. The high idle is usually a compensation to try to keep the engine running. There is also a microswitch activated by throttle return which may need adjustment. Also, the rotary idle air valve could be gummed up and need cleaning. It is under the air cleaner, between intake runners, and is in the same path as all the rubber plumbing in question.

Steve
Reply With Quote
  #3  
Old 12-01-2002, 03:14 PM
irieite's Avatar
Registered User
 
Join Date: Nov 2002
Posts: 157
Thanks Steve! I'll take a look at that and see if it helps.
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 03:17 AM.


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