Question about 2002 Chevrolet Silverado 2500HD

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2 and 7 are misfiringbut everything reads fine

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Explian what you mean everything reads fine, please.

Posted on May 21, 2011

  • Jeffery Lewis
    Jeffery Lewis May 21, 2011

    You can call me on my cell listed in my info if you would rather talk to me about this problem some times this is much easier because you can goto the truck and perform the tests i may have you perform.

  • Jeffery Lewis
    Jeffery Lewis May 21, 2011

    When you pulled your codes you must have had a P0302 and a P0307 these are pin point codes for cylinder missfire. Because you didn't have any injector codes i would procede with checking the ignition system remove the spark plugs from #2 cylinder and #7 cylinder . #2 cylinder is the very front cylinder on the passenger side of the engine , #7 is on the drivers side all the way back . If the plugs are fine reinstall hook plug wires back up , start truck and take an old windex bottle, fill it up with water and lightly spray the plug wires with the water and start listening for a skip if it starts skipping replace your plug wires you may also have a coil starting to fail so beaware that the wires may not be the only problem . Shorting plug wires can draw excessive amprage and cause a coil to weeken or even fail.


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