Quote:
Originally Posted by sbriar
It could be your Oil Pressure Sensor, the fuel pump seems to be working because it primes up for start, after the car starts the oil pressure sensor takes over and keeps your pump running, if the main computer does not sense any oil pressure it will shut off the pump.
|
GM use to wire the fuel pump through the oil pressure switch but they stopped doing it that way some time in the mid-90's model years.
Quote:
Also check your main connection from your fuel pump, it is the 7 or 8 pin connector located on the body next to the gas tank, unplug it and see if you see any spread apart connections on the female side of the plug.
I replaced 3 fuel pumps in my 03 Malibu before finding out that I had a bad plug. I removed the connector from the car by taking out the back seat, drilled out the connector so wires would run through the connector and hard wired it, after by-passing this connector I haven't had any fuel pump problems.
|
This could be a possibility if he had a fuel pressure problem, but he said he has good fuel pressure. He's also said he has spark from at least 2 coils. Based on what we know so far he needs to find out if his injectors are being pulsed and go from there.
I should correct something about using a noid light to test injector pulse at the 10-way connector. A regular noid light probably won't be able to bridge the two halves of the injector connection without an inline adapter harness. But the pin layout is A,B,C for injectors 1,2,3, and H,J,K for injectors 6,5,4. There should be +battery voltage with key ON supplied through the injector side of the harness at those pins, and appling +battery to the PCM side at those pins should flash the test light while cranking.