I'm a little lost with the fuel pump

stangoroma said:

hey dudes im new to posting on this fourm and like what i read all the time, ok i have change my fuel pump and its good(hot wired it and worked) i have a multimeter what i want to do is check from the pump forward (fuses are fine first thing i checked) how would i check the two plugs that the pump goes in too. i have a 2003 gt 5sp

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wmburns said:

FWITW, I assumed the OP was hot wiring the FP to "prove" that the new one worked.

The OP didn't state it, but I thought it possible the reason the original FP was replaced was due to a "no start" condition. The no start continued even after the FP was replaced.

Unfortunately, this would not be the first time a fuel pump has been replaced due to a PATS issue. It does happen often enough that I thought it made the most sense to start there.

I figured if it turned out NOT to be a PATS issues, then the lengthy/difficult process of diagnosing the Fuel pump driver module (FPDM) could begin.

Side note. This is an example of why all of the details can be important. What is the year/make/model/mileage of your car? What was the original symptom? What was changed before and after? What were the results? These critical details can make a difference in how to best attack a problem. It may avoid checking/replacing things that are unlikely to resolve the original complaint. <jumps off soapbox>.

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