I HAVE A 95 740I THAT WOULD NOT START, THE FUEL PUMP WAS NOT COMING ON SO I CHANGED IT. ATER THE CHANGE THE CAR STARTS AND RUNS ROUGH FOR ABOUT 3 SECS AND SHUTS OFF. WHILE ITS SHUTING DOWN AND AM GIVING IT GAS IT SOUNDS LIKE AN AFTER MARKET INTAKE(THAT RUMBLING SOUND) AND SHUTS DOWN.
1995 BMW 740I
CHANGING FUEL PUMP SPRAYING STARTER FLUID IN INTAKE(RUNS THEN SHUTS DOWN AFTER 2-3 SECONDS). CHECKED PLUGS(GOOD PLUGS BUT WERE WET WITH GAS)
Thanks for choosing JA,
when using regular 12v tester i get no power at the pump , but when use the snap on probe there is power at the pump how much voltage is the pump
What wire are you testing?
I tested them all
no power not even from the violet1
but this occurs with the 12 volt tester withe probe it seems fine
What reading are you getting with the probe?You verify it's getting power. What about ground? Jumper the ground wire to a known good ground source. You don't have to check the pump directly, you should test the relay. If the relay isnt getting power, the pump definately isnt.
My probe doesnt have a meter pardon my lack of tools but am working on it in my backyard. It didnt start at all before i changed the pump but now its starting it just wont stay running so am assuming the pump now works but there is another problem
Okay, keep in mind the fuel pump can only get power while the key is on. Run a wire past the relay, bypass the relay completely. I will be back in the morning.
Relist: I still need help.MY 95 740I KEEPS FLOODING, THE FUEL WONT BURNI USE93 OCTANE, CHANGED THE PLUGS FAS FILTER BUT IT KEEPS FLOODING