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Old 11-04-2009, 01:47 AM   #6 (permalink)
Gray Haze
I set ATL on fire.
 
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Join Date: Mar 2002
Location: Fort Worth, Texas
Drives: 3500GT VR4/87 MCSS
Trader Rating: (26)
Gray Haze Level 2Gray Haze Level 2Gray Haze Level 2Gray Haze Level 2
Default Re: North Texas guys, I need your help

Please don't bump a thread every 30 minutes.

I'd test for continuity across the fuel pump wires, make sure there isn't an open circuit on the fuel pump assembly. If there is an open circuit, your gonna have to pull the bulkhead and figure out why, be it a bad pump, or screwed up wiring job.

After you've narrowed down that everything is kosher at the bulkhead, Verify that the wire running from the front to the rear of the car for the fuel pump is still good, and isn't shorted to ground. This can be done by testing for continuity between the fuel pump 12V+ wire at the bulkhead, and the black test lead on the passenger strut tower. Make sure it isn't shorted to ground.

If those check out, the next two things on the list are the fuel pump relay, and fuel pump resistor. Both approx under the engine bay fuse box. If you can't find an issue here, check the MFI Relay on the passenger side of the center console.

Now just a word on function, The fuel pump only turns on when the starter is engaged, or the engine is above a specified RPM. So, a good way to test for issues, without needlessly spinning the engine, is to unplug the starter at its connector by the air filter, this will allow you to place the key into the start position, and activate the pump via its normal circuit. The backup method of activation is to run 12V+ to the black test connector under the hood by the passenger strut tower.
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