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1995 pontiac grandam runs rough hot runs fine coid

Change head and intake gaskets plugs wires fuel regurlator ready to change o2 sensor

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Have you tried the temp coolant sensor. sounds like yours maybe bad. Once it gets hot they can shut down a engine

Posted on Oct 28, 2012

  • 8 more comments 
  • conrad Oct 28, 2012

    the plaun gasket was leaking changed it put newgaskets on top ran rough so i changed wires and plugs than changed fuel regurlator dont no if o2 sensor is gumed up or deefect new plugs have 2 check ready 2 chang o2 sensor

  • conrad Oct 28, 2012

    not yet

  • conrad Oct 28, 2012

    car idles fine in nutrol not in drive motor shakes

  • conrad Oct 28, 2012

    car run fine cold runs rough hot in idle and worse in drive i meant

  • teds repairs
    teds repairs Oct 28, 2012

    well in drive that would be the tpi has bring up the rpms. are all the bolts torqued down right. I do a lot of 3.1 head gaskets ,and get one or two like this

  • conrad Oct 28, 2012

    i had afriend porse mechanic do it the oil and water dont mix any more so idont no ? what does tpi stand for?

  • teds repairs
    teds repairs Oct 28, 2012

    thottle position sensor ,but that would give a code. do you have any codeswas there any water or anti freeze in the oil. did he flush the engine out with a motor flush which goes in the oil and you run the motor for 2 minutes and drain it and put flesh oil and a new filter

  • conrad Oct 28, 2012

    yes i flushed it

  • conrad Oct 28, 2012

    i dont have a obd meter

  • teds repairs
    teds repairs Oct 28, 2012

    ok .is there any codes coming up



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SOURCE: 2004 pontiac grand am replaced O2 sensor, spark

Idle air control motor(IAC). EGR valve. And vacuum leaks to include the brake booster and if you have a plastic intake, that too. this is a start there are other things that will have the same symptoms. let me know

Posted on Nov 12, 2010

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