fuel system on 1990 Oldsmobile 98

what would cause fuel pump to only run couple seconds and turn off when ignition turned on. I changed in-frame filter and before connecting front of filter I turn on car pump only runs a couple of seconds then stop.

by in Warren, OH on October 01, 2009
1 answer
ANSWER by on October 01, 2009
the fuel pump is only supposed to prime for about 1-2 seconds when you turn on the key, if the computer does not see an RPM signal from the engine, then the computer turns off the pump. This is a safety feature in case of an accident, and the car is damaged and the fuel lines are leaking. The pump will be turned off by the computer, if the engine is not running, so the fuel does not spray all over and cause a huge fire.
Related Items:
This problem only happen once, a couple days ago. The car is turning over like it wants to start but the engine isnt starting. Is it the fuel filter or pump, or the spark plugs and wires??
The car runs great for about 10 minutes or so then stalls. will not start for about 10 to 15 minutes later. Have alredy changed the fuel filter and mass air flow sensor. I almost changed the fuel p...
this is the 2nd pump in 2 days and the system will still not prime,the tank is full of gas, the car turns over fine.

Related Content