Question about 1985 Pontiac Firebird

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1985 Firebird 2.8 ltr, automatic, FI. I replaced the fuel pump approximately 5 years ago. Car was operating fine and suddenly lost fuel pressure, when I checked the pressure I only had a few pounds of pressure and that was all. Could it possibly the fuel pump relay or maybe a wiring harness issue or would I possibly have to replace the fuel pump again? When the pump was originally replaced, the relay nor the harness were replaced. Please help.

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Sounds like a bad fuel pump. The relay would only turn it on or off. If it's off you'd have no fuel pressure. Make sure you replace the fuel filter and the filter 'sock' on the pump as well when you change it.

Posted on Sep 12, 2010

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Sounds like your fuel filter is clogged i would try replacing that then try and run injector cleaner through it

Posted on Sep 12, 2010

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  • winnerj77 Sep 12, 2010

    I replaced the filter but have not ran any injector cleaner through it. I did not mention that I had the system flushed about a month before it quit. I will try that though. Thank you!

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