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1992 Buick Roadmaster runs bad after warming up.....?

Starts fine, runs fine for a little while, but as it gets warmed up, it starts to misfire and hesitate...stalls from speeding up from a stop. When I tried driving off from a parking space, it misfires, stutters then stalls...runs better when it's cold. What could this be?

Update:

Fixed the stalling by fixing a vacuum hose. But, it hesitates on acceleration. When I push the gas down, it sputters and skips a firing..kind of doesn't do anything....then fires...sputters...than accelerates. Could it be the fuel filter? What's up?

3 Answers

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  • 1 decade ago
    Favorite Answer

    Hi, Common prob is the crank shaft sensor is bad. You coud replace the coolant temp sensor, cheap try to fix. Might be a bad sensor & stuck in cold mode. EGR is disabled in cold mode. Have a look to see if it isn't carboned up. Dave

  • 1 decade ago

    its ur fuel pump its straving for fuel

  • 1 decade ago

    hole in fuel line,when choke is off it starves.

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