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Thread: 02 Duramax 6.6 no power

  1. #1
    Join Date
    Mar 2017
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    Creede
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    Default 02 Duramax 6.6 no power

    02 Duramax 6.6 no power
    Need advice on no power issue please. A buddy changed his fuel filter and after he changed the filter it would die on him/losing prime. I rebuilt the filter head for him. Started and ran fine except had no power. If I held the gas pedal steady the rpms would fluctuate. Took the MAP Sensor out and sitting in driveway it had all the power in the world with sensor out. Sensor was melted in metal tube. Replaced MAP with new one today. Now it won't hardly run at all.

  2. #2
    Join Date
    Feb 2000
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    Montana
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  3. #3
    Join Date
    Mar 2017
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    Default

    Quote Originally Posted by More Power View Post
    There must be one or more trouble codes present whenever the engine is in a reduced power state. Have the codes been read?
    The codes had been erased before I started on the truck. I'll go read them again

  4. #4
    Join Date
    Feb 2000
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    Montana
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    11,382

    Arrow

    Quote Originally Posted by Jnopal77 View Post
    The codes had been erased before I started on the truck. I'll go read them again
    Even if erased, one or more trouble codes will return if the same problem exists at/after the next ignition cycle. Let us know what you see.

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