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 03-12-2000, 12:08 PM
seriaj55@aol.com
Guest
 
Posts: n/a
I'm trying to diagnose why this car cuts out intermittently. From prior posts I see that the Overvoltage Relay could be s asuspect. Is this the relay next to "KLIMA". Is it 002 545 92 05 marked "KPR". Is there any way to check this relay with an OHM meter?
Reply With Quote
  #2  
Old 03-12-2000, 09:02 PM
Moderator
 
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
I think that is the fuel pump relay. The overvoltage protection relay is smaller, silver (not black) and has an ATO fuse in the top of it under a clear cover.

The OVP relay is the power feed relay for the idle control motor and the fuel control ECU. Of course it is easy to check its function with a multimeter, the problem is that since when you check it you won't be having a problem so you won't see a problem with your test. I have driven 300Es hundreds of miles with as many as five different things being monitored to solve intermittant stalls.

I have had these stalls caused by OVP relay, Fuel pump relay (not common way of failing), crank sensor, EHA (electro hydraulic actuator), speed sensor (on back of speedo), the air flow meter (the acceleration/air flap potentiometer - not available separately) and the decel micro-switch (on 88- models).

I have checked, fixed, and failed at least once a week for over ten years with these problems. Almost everyone one of the above problems would take no more than a few minutes to diagnose if they would stay broke for more than an instant.

Good Luck!




------------------
Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rebadging '87 300e emr0591 Detailing and Interior 6 09-04-2007 10:12 AM
'86 300E vs '91 300E... Any opinions out there??? pjtib Tech Help 23 05-04-2005 10:26 PM
300E FIRST-gear start brewtoo Tech Help 16 03-11-2005 06:27 PM
300E cutting out Coultl Tech Help 0 10-11-2003 11:41 PM
Transmission Question 1988 300E (Need Technical help)n china beach Tech Help 4 03-26-2002 11:25 AM



All times are GMT -4. The time now is 12:55 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