[W126 Coupe] Fuel Pump Issue

[Jay Manek]

Hi All.

Well ive changed the relays... i tried a new one and ive tried spare old ones but no good.. The pump runs for a few minutes on a new relay but then cuts out. 

Help!!

Many Thanks & Regards

Jay Manek | www.mercland.com| 07716 349949


From: Iain Gunn 
Sent: Thursday, October 01, 2009 1:27 AM
To: Mercedes Coupes Mailing Lists 
Subject: Re: [W126 Coupe] Fuel Pump Issue


these relays have changed over the years, original was 5 pins and one blank. I ordered a new one once and it came with 4 pins,1 blank and 1 pin missing. It was the wrong relay. Found the correct one and no problem.
  ----- Original Message ----- 
  From: Jay Manek 
  To: Mercedes Coupes Mailing Lists 
  Sent: Wednesday, September 30, 2009 1:32 PM
  Subject: [W126 Coupe] Fuel Pump Issue


  Hi all,

  Need some help.

  My 560 SEC decided to cut out on me at the weekend and I was stuck on quite a busy road. I found that the fuel pump wasnt running. I phone an auto electrician friend  who suggested bridging terminals 30 and 87 on the fuel pump relay, I did this and it fired into life... so managed to complete my 160 mile journey home.

  Now im back home and a new relay has not done the trick, still does not fire up the pump unless i bridge the pins.. So it must be something associated with the relay?... 

  Looking at the wiring diagrams there are various items connected the fuel relay... anyone any ideas where I should start looking? 


  Many Thanks & Regards

  Jay Manek | www.mercland.com| 07716 349949





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