Question about 1990 Buick Century

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Starts fine, Idles fine, Drives Fine for a while

1990 Buick Century 3.3L - ***No Check Engine Light*** Starts fine, Idles fine, Drives Fine for a while, Stalls after 10 - 30 minutes. The stall is not a rough stall, but instead just a straight die. Engine will immed. restart run for a for moments then die. Once stalling process begins the vehicle will not drive, but will idle. I have relaced CPS, O2, Fuel Filter, and Harmonic Balancer. I have Completely dismantled the Throttle Body throughly clean everything including other sensors attached. The plugs and wires are fine, just replaced about 5,000 miles ago. Gap is still good. If you can help please do so I think I am about to commit arson! :)

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  • djcndhouse Feb 20, 2009

    1990 3.3L century custom. Starts and idles in park or neutral fine. Dies when i try and put in forward or reverse.

  • yadayada
    yadayada Nov 02, 2011

    Have you had the fuel pressure monitored while this occurs, sounds like the electric fuel pump is failing when it gets hot.

  • Anonymous Mar 12, 2014

    starts ,idles fine.but stalls when driving

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You might want to chk. the crank sensor and or cam sensor. sounds more to me that it could be fuel problem. chk. fuel pressure. pump could be on its way out. don't be fooled by hearing the pump running as they sound like they are pumping but there not, at least not enought pressure to keep it running. pressure should be around 50 p.s.i.

Posted on Jan 06, 2009

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Posted on Jan 02, 2017

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