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 11-25-2005, 08:23 PM
Registered User
 
Join Date: Nov 2005
Posts: 1
Unhappy 190E fuel-pump relay power-source?

Ok, got the headgasket replaced that was fried due to stuck thermostat. Car was running fine at that time. Now that it's back together, I have spark but no fuel...

Tried pulling the fuel-pump relay and jumping pins 87 to 30 and still no fuel. Measured pin-87 and it SHOULD have +12v power right? The wiring diagrams in my Chilton manual sucks, but I could at least make out that pin-87 should go to the alternator then to the +positive on the battery. There's no power on this pin with the key OFF or ON.

Any suggestions?

TIA -danno

Reply With Quote
  #2  
Old 11-26-2005, 01:54 PM
Super Moderator
 
Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
I believe that 30 is the power source (hot in start or run), and 87 is the output to the fuel pump. If you jumped 30 and 87 with the ignition on and the pump still didn't work, then your pump is bad or you have a wiring problem.
__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
Reply With Quote
  #3  
Old 11-26-2005, 10:52 PM
Registered User
 
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
If you've checked your fuses, and they are old but appear fine, I would recheck them. Old fuses often have hairline stress breaks almost invisible at a glance. When such a fuse is pulled out, though, it usually falls apart.

Steve

__________________
'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
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 05:39 PM.


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