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 11-14-2009, 08:23 PM
diesellac's Avatar
dieseladdict
 
Join Date: Aug 2009
Location: illinois
Posts: 101
1989 300 sel cold start problem

Ok so recently i bought a new (to me) 300 Sel. so me and my dad get on it replacing things on it like injectors, pipes and some rubber. But one thing we can't figure out is why the cold start isn't working at all! We checked and power isn't getting to it and we're wondering what controls it a computer some thermometer? We went to autozone for a manual but they didn't have any for my model.

__________________
1974 240d
1983 240d -sold
1989 420sel with om606
1994 s350 turbodiesel - sold

Reply With Quote
  #2  
Old 11-15-2009, 12:11 AM
mak mak is offline
mark
 
Join Date: Jul 2006
Location: Westfeld .
Posts: 687
103 engines : OVP , Overvoltage relay goes bad and so does the fuel pump relay. causing problems.
i would start by removing the OVP cleaning the pins and re installing with a fresh fuse in it. With age the inside soldering deteriates and voltage does not get to cold start and other systems.
for reliability you will find replacing the old fuel and over voltage relays is best .
mak
300se

Last edited by mak; 11-15-2009 at 12:20 AM.
Reply With Quote
  #3  
Old 11-15-2009, 10:03 PM
Registered User
 
Join Date: Oct 2008
Posts: 557
what I would look at first here is the coolant temputure sensor...it's the very first thing the computer looks at for status of general engine state.
General Engine State would be a great song/band name...anyway...I would start with the old coolant temp sensor...it's cheap (around $25) and fairly easy to replace and you will end up doing it anyway....best of luck
Reply With Quote
  #4  
Old 11-20-2009, 10:10 PM
diesellac's Avatar
dieseladdict
 
Join Date: Aug 2009
Location: illinois
Posts: 101
so i checked the ovp relay, and too quickly i thought that was it, since the rpm went up and the car actually held idle and then the rpm went a little down. But turns out the next day my dad tried to start the car the next day and it wouldnt hold idle and warm up. so that only fixed the abs lol. ill have to take a look at that temp sensor and play around with the other relays. thanks for the posts

__________________
1974 240d
1983 240d -sold
1989 420sel with om606
1994 s350 turbodiesel - sold

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 12:08 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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