96 pontiac sunfire fuel pmup not working...please help?

[Kristen]

i took down the tank returned the fuel pump got a new one ...still no fuel fuel pump doesnt go on checked the fuel relay under the hood i here it clicking replaced it still fuel pump is not working...bought one of those test lights...when u turn the on acc position out of the ten or so pins one lights up....meaning there is power gettting to the pump atleast one of the pins not sure howe mmany of those pins should be getting current to it theres like 9 of them..please help any suggestions would be much appreciated...fyi car starts when i put ether in the breather so it runs good just no fuel pump working...

 

[chris c]

You sound like you know exactly what you are doing.

Is there a good ground. If you have power that's only half the battle. Where is the ground for the fuel pump?

You can find a schematic at Auto Zone . com Register for an acount and add your vehicle. They'll have the repair manuals and schematics. Find out what every one of the 9 pins do.

One of them may go to a fuel pump driver module that turns the pump on and off. That could be bad. Fords have fuel pump driver modules.

Does Sunfires have fuel pump shut off switches? Your owners manual might reference them. Again Fords have shut-off switches for accidents. If the car hits a big bump or is in an accident the switch is tripped to stop the fuel pump from pumping fuel after an accident.

Sorry about all the Ford stuff. I don't have time to look up GM I have to run to a birthday party. So just trying to throw some ideas your way.

Good luck