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1994 bmw 540i , no power on fuel pump, no power on fuse pump, the relay replaced with a new one and still not working, do you have an answer for this problem? thanks....
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why are you asking the fuel pressure. It doesn't make sense, because once the fuel pump are failing, the car will stop and won't start. Tell straight what do you observe about your car, engine shaking, not enough power, or what, or need to scan or diagnose your Bmer to solve your problem. ok
if you have 12 volts at the pump and it doesn't run it's the pump. If you have 12 volts at the pump it means the relay is doing its job and the fuse is ok
remove the pump and run 12v to it directly from the battery to test the pump.
2000 bmw 540i spedometer not working
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