Question about 1997 GMC Jimmy

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Motor is not running hot but stall's after 20min

I have a 94 jimmy it will run for 20 min then stall it will restart right away but i must keep my foot on the gas can my problem be the Catalytic converter

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  • my4x4jimmy May 30, 2009

    it just stall's after 20 min just change plugs and wires

  • my4x4jimmy May 30, 2009

    thanks i will give it a try

  • yadayada
    yadayada May 11, 2010

    does it lack power when accelerating? if not, it is not the catalytic converter.

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Sounds more like the TPS (Throttle Position Sensor). When the Catalytic Converter goes, usually will get other symptoms like lack of power, bad sulphur smell, & a lot of heat coming from under the truck and depending on where it's located, hot floorboards. If you go to a place like Autozone and get a free diagnostic test, the codes would give you a better idea where the problem lies. Best of luck.
Greg

Posted on May 30, 2009

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