View Full Version : 540 fuel pump relay location
barry 90 525i
12-29-2008, 07:15 PM
Still chasing my 95 540/6 rough running. Went and switched fuel pumps from my other 95 540/A that runs good. Now my 540/6 will not start,just cranks. Which relay is it. In the pass side box i have one white and 3 light green ones. i figure the white is main relay,but which green one is fuelpump. thanks
http://home.comcast.net/~cpkver8/images/fpr.JPGI thought the fuel pump relay was actually in the DME Box on the other side,no?
barry 90 525i
12-30-2008, 12:20 PM
My box looks different. I have 4 relays in a row, 1 white, 3 light green.
barry 90 525i
12-30-2008, 01:08 PM
Well like a idiot i had hooked up the lines backwards. so now the car starts up obut runs really bad still. So now i have switched the fuel pump, maf and replaced the plugs, car still runs bad. Next i will change the fuel filter, have to order them since no one carries the double filters. I dont believe they could be causing my problem,but want to eliminate them.
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