Question about 2005 Chevrolet Colorado

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2005 chevy colorado runs rough and gets bad gas mileage.

2005 chevy colorado ran diagnostics in a shop results were as follow random misfire on cylinder 2 and 3. I replaced coil packs on the cylinders. Motor still runs rough and gets bad gas mileage. I think it maybe the throttle position sensor or the pressure regulator valve.

Posted by Anonymous on

  • 12 more comments 
  • kylii_black Sep 12, 2008

    my 05 truck missfires and the engine light comes on and the gas petal dosent seem to have much pressure behind it,

  • pmcdmc Nov 26, 2008

    2005 colorado runs ruff, and even stalls in the morning... and now the check engine light is on????????????

  • waltersbrgtt Nov 28, 2008

    Engine light on my 2005 Colorado has come on again (third time this month). Engine seems to idle rough and has slow pick up speed. I already changed the gas cap and replaced the gas with Premium grade (this took the light off the last two times) but now that damn light is back on.

  • blow110 Dec 07, 2008

    I had the same problem and there was a recall on the head. They had to replace it 3 times before it was fixed right. I'm still having issues with it but now I'm just looking to get rid of the truck.

  • coloradoprob May 02, 2009

    '05 Colorado,same problem and even dies sometimes.They do not have wires only boots and coils.Is there a way to check the coils or would it be evident if you pull the plugs and check them.

  • Anonymous Mar 13, 2014

    how to find bad tpm sensor & replace it

  • Anonymous Mar 17, 2014

    engine runs rough, bad gas mileage

  • Anonymous Mar 19, 2014

    check engine light came on, engine running below recommended temperature on 2.8 4 cylinder engine. how to repalce thermostat?

  • Anonymous Mar 20, 2014

    exact position and replacement

  • Anonymous Mar 23, 2014

    Gets bad gas mileage starts fine when cold

  • Anonymous Mar 24, 2014

    Cannot turn the key from off position

  • Anonymous Mar 29, 2014

    motor runs great not skipping computer says #4 misfire bad 150 misfires per cycle

  • Anonymous Mar 29, 2014

    Motor gets wet won't start????????????????????????????????????????

  • Anonymous Mar 31, 2014

    I installed an electric fan my camshaft positioning senser went off same with my crankshaft senser



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Sounds like it needs spark plugs and wires, and a fuel system treatment.

Posted on Oct 08, 2008



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There is a recall on the heads, mine had to be taken in for warranty for warranty work

Posted on May 07, 2009


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