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cranedoc
12-16-2009, 06:20 PM
Hi guys iam new to this forum and need to know what wires to check on the fuel pump harness where ti plugs into the fuel pump harness.The car is a 1995 525i ,i think the fuel pup is bad but want to check the electrical supply to the pump.Any help is greatly appreciated.

BMR_LVR
12-16-2009, 06:45 PM
Maybe this will help.

http://www.bmwe34.net/Wiki/tiki-index.php?page=Fuel+pump

Also search for "fuel pump relay" and you will find ways to check it easily. Hopefully that is the problem because a relay costs $15-$20 at the dealer

I had the relay go bad on my E36 and confirmed that I had spark by squirting a small amount of starter fluid in my airbox. When it fired and ran for a second or two, I knew that I had a fuel delivery problem. Once you confirm that, checking the fuel pump and relay aren't that hard.