Question about 1989 Pontiac Firebird

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Fuel pump keeps failing

I've got an '89 Firebird with a 6 cylinder 3.8. When I bought the car 2 months ago, the guy said it had a brand new fuel pump but it didn't need it after they changed it. He said there is an inline fuse under the body that keeps blowing.

The car ran great, then one day the fuel pump quit working. I can't hear it hum when I turn the ignition on and I have no fuel to the injectors.

Is there any truth to the inline fuse or is the pump out? I'd like to know before I drop the gas tank and spend $70 on a pump I may not need.

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  • Anonymous Feb 28, 2009

    I have the same problem on my 2000 firebird. I had the fuel pump replaced once and it fixed the problem, but NOW just 4 months later it has happened again. I think it may be some kind of electric problem...I wish it was something as easy as an in-line fuse. The fuses in the engine compartment are all good. I have no idea whats going on.

  • ken1962 Mar 24, 2009

    We have an 1989 firebird V8 that runs great, new fuel pump about a year ago, runs no problem for a couple of days, then my son stops it, and it wont start again. Seems if we let it cool a few hours then it starts up again and runs fine. Changed the fuel filter last week on Tuesday night then didn't do it again until Sunday night came home from work and turned it off and wouldnt start back up. Started fine again this morning. Now what?

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Check the fuel pressure first with a gague the pressure should be at 40-47 psi
does any other things stop working when the pump stops?
it sounds like you have a short to ground in the fuel pump circut, check the circut for any chaffed wires.... there is a fuse in the fuse box there is not supposed to be one on thr frame rail
another possibillity is a clogged fuel filter making the pump work harder and overheating
check pressure wires and replace the filter one of these is your problem
let me know dant forget to rate me

ty : fixallpaul

Posted on Dec 10, 2008

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