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 10-25-2001, 01:21 AM
csx27
Guest
 
Posts: n/a
Unhappy 420 SEL Problem II

We tried putting more fuel in the tank, and someone told us to put fuel in the carb, it started the car, but as soon as the fuel in the carb ran out it died again. Is the fuel pump located in the tank? Does anyone think that it might be something else?
Reply With Quote
  #2  
Old 10-25-2001, 04:17 AM
Registered User
 
Join Date: Dec 2000
Posts: 368
The pump is located in front of the rear passenger wheel.

You either have a bad pump or a bad relay. Test the pump by bridging the pins on the relay socket or by applying 12v directly to the pump.

If the pump is good you probably have a bad relay. Try smelling it. It should have a burned odor.
Reply With Quote
  #3  
Old 10-25-2001, 11:17 AM
Registered User
 
Join Date: Sep 2001
Location: Queens, NYC
Posts: 158
Remove the fuel pump cutoff relay and jump two of the pins: 87 and 15. If it starts, your relay is bad. If your relay is bad, your fuel pumps probably shorted it. May as well replace the relay and the pumps, or you'll keep burning through $150 relays.
__________________
2003 S500 Black/Charcoal
1990 560SEL 61k Arctic White/Grey

SOLD:
1988 420SEL Black/Palomino Sold @ 85k
1987 420SEL Midnight Blue/Grey
1986 420SEL Diamond Blue/Grey
1983 380SEL Champagne/Palomino
Reply With Quote
  #4  
Old 11-01-2001, 09:51 AM
csx27
Guest
 
Posts: n/a
how do you jump the pins?
Reply With Quote
  #5  
Old 11-01-2001, 11:08 AM
PaulC
Guest
 
Posts: n/a
Jumping the pins means creating a direct electrical connection between the two pins in question (i.e., with a piece of insulated wire with appropriate connectors crimped or soldered on each end). The trick is to ensure you don't accidentally create an electrical connection with a third pin while doing so (potentially $$$).
Reply With Quote
  #6  
Old 11-01-2001, 01:47 PM
Registered User
 
Join Date: May 2001
Posts: 301
What carb?? A 420 sel has fi for all years, right?
Reply With Quote
  #7  
Old 11-02-2001, 12:44 AM
csx27
Guest
 
Posts: n/a
Problwm Solved!

I went to James Motors in Lexington Kentucky and purchased a relay and changed the pump. Worked like a charm. It started right up and is running fine except for a lot of white smoke now. I suppose that is just from sitting, but I am going to change the oil and get a tune up tomm to see if that 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
86' 420 SEL rough ilde after mechanic replace all 8 injectors.... mm888333 Tech Help 19 01-18-2012 12:20 PM
420 SEL Brake problem joeygeno Tech Help 10 12-21-2004 01:09 PM
420 SEL Starting Problems + Low idle etc xsohaib Tech Help 6 05-08-2003 05:38 PM
wheel bearings on '90 420 SEL Todd W126 Tech Help 8 08-13-2002 06:06 PM
420 SEL won't start RichardC Tech Help 1 07-22-2002 09:21 AM



All times are GMT -4. The time now is 09:43 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