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 08-01-2003, 08:59 PM
Registered User
 
Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
Hot fuel pump relay

Well I have been having stalling problems on an 89 300se and I think I have narrowed it down to the fuel pump relay. I removed one of the fuel injectors to have a look at the spray pattern. I cranked the engine and there was a 15second delay before the fuel started to come out of the fuel injector.

I went to remove the fuel pump relay and it was very warm to the touch. Does this most likely mean that I have a bad fuel pump relay?

The car will not run at all anymore. If I crank the car long enough, it backfires, which worries me greatly. Any help is greatly appreciated!!!

__________________
George Carstens

Last edited by Maddog; 08-01-2003 at 11:19 PM.
Reply With Quote
  #2  
Old 08-02-2003, 03:50 AM
Registered User
 
Join Date: Apr 2002
Location: Surrey, Uk
Posts: 254
Sounds like the relay. You can jump terminals 30 and 87 and the pump will run. If the car starts then relay is bad.
__________________
Mick J
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)
Reply With Quote
  #3  
Old 08-02-2003, 09:45 AM
Registered User
 
Join Date: Oct 2002
Location: Toronto, Canada
Posts: 700
Had a very similar probelm on my w201. The fuel pump relay started overheating after I washed the car and some moisture got inside it. It caused the car to shut down in the middle of the road for a few minutes until the fuel pump relay cooled down, then it would restert and go a bit more until it overheated again. Very annoying.

replaced the fuel pump relay and the problem never came back.

xp
__________________
1985 190E 2.3L - a constant project.
Reply With Quote
  #4  
Old 08-02-2003, 10:55 AM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Don't overlook the filter ..
A clogged filter will cause the pump to draw higher than normal amps, resulting in a heated relay ..
If the pump does run, an amps draw test would be the next step..This can be done at the jumper MJ mentions...

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 11:10 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, 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