Thread: 2006 Pontiac Grand Prix GT Supercharged - Reduced Engine Power

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  1. #1 2006 Pontiac Grand Prix GT Supercharged - Reduced Engine Power 
    hkealiher
    hkealiher is offline
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    Default 02-08-2016
    I have a 2006 Pontiac Grand Prix and have put all the following into it


    new head gaskets
    new intake gaskets
    supercharger gasket
    water pump
    thermostat
    MAP Sensor
    Changed a few of the Vacuum lines
    new plugs and wires




    and I am still getting a check engine light that causes the car to go into Reduce Engine Power mode and shut down.
    telling me its a
    P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input

    Already replaced the Map sensor - I am at my witts end with this car - Please any help would be greatly appreciated
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  2. #2 Re: 2006 Pontiac Grand Prix GT Supercharged - Reduced Engine Power 
    Fivefingerdeathpunch
    Fivefingerdeathpunch is offline
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default 02-08-2016
    You have two map style sensors.

    One is a baro sensor and the other a MAP sensor that reads vacuum and positive boost pressure.

    Check the harness for both sensors. Something isnt completing the circut it seems like.

    SMGPFC Member #1
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