Where is the or is there a reset button for the fuel pump on a 1989 bmw 325i. i have no power to the fuel pump. Is there 12v going to the pump? son was driving down the road and the car just quit. Remover the pump and tested the wires to the pump and cant get no volts. Have volts going to the fuel sending unit.
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there is a 30A fuse in the power line to the pump. Check for continuity, if the fuse is good check to see if there is 12v on the
relay input (black/yellow wire). If voltage is correct check the Mass air flow sensor operation ( you can find the procedure at the AutoZone web site in the repair manual section for your car). The MAF sensor sends the control voltage to the fuel pump relay, if that is good then the relay might be bad. If the CCRM was bad I believe it would produce a fault code. I hope this helps,
The relay should have been trouble shot BEFORE changing out the pump. If you've got 12v at the pump it is not the pump. Unless you installed a bad pump. But, no 12v at the pump= bad relay. But ten you've got to see what activates the fuel pump relay.
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