Fuel Pump Relay in 1995 E320 Wagon

12261 Views 7 Replies 4 Participants Last post by parad0x_i, Apr 17, 2009

batmanandbobbin

Discussion Starter · Apr 9, 2009

Hi--

My fuel pump is sometimes not turning on when I turn the key before starting the engine. The pump sounds fine when it runs, but it sounds like the fuel pump relay is dying. I used to have this problem on volvos that I drove and it was easy to replace the fuel pump relay in the older volvos.

My question is: where is the fuel pump relay on my car? The service CD's show that it is in the rear compartment of the sedans, but I don't see a location for the wagons. I've read a lot of posts claiming that the fuel pump relay is under the rear seat, behind the battery, or that the fuel pump relay is part of the OVP and that there is no separate relay.

The service CD's show a distinctly separate device called the fuel pump relay, so I believe that there must be one somewhere. Can anyone advise on where to find the relay in my '95 E320 Wagon?

--James

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parad0x_i

· #2 · Apr 10, 2009 (Edited)

Sorry i don't know the location of your FPR.. mine is behind the battery

What i would suggest is that there's little in them that can 'be dying' as such..
It will either work or not..

What might be causing it is corrosion around the pins.. dry joint inside or a loose connection or fuse..

I took mine apart and removed any dry solder joints and then re-soldered them..
New FPR's are expensive..

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parad0x_i

· #4 · Apr 13, 2009

I see now that the FPR for your model is a simple relay.. hence the price..
I was quoted £92 +vat for my 260E.. which is why i chose to repair it..

I did a google to try to find out the location of yours but drew a blank..

Good luck..

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parad0x_i

· #8 · Apr 17, 2009

Same here.. fuel pump should run a few seconds for each ignition key turn (from fully off). If not then it's not getting any power.. Check all relays in the relay box are tightly pushed down and all fuses are ok..
Check also the 3 pin connector (Black plastic rectangle about 4cm x 1cm) which is situated on the bulkhead in front of the battery. It pulls apart. Centre connection is starter switch wire and the other 2 are power leads - all 3 activated by the ignition switch..

I think you'll find your Fuel Pump Relay in the main relay box behind the fusebox.. (next to brake servo) as it's a very simple small non-electronic one

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