Thread: Reduce Engine Power

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  1. #1 Reduce Engine Power 
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    Hi There I have been having a problem with my 2006 grand prix. I can be driving and my check engine light will come on and the "reduce engine power" thing comes on. At this point I cannot set my cruise and have a very hard time accelerating at stop signs after I have come to a complete stop. My car has never shut off on me like I have read on some of the other discussions, anyone have any suggestions??
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  2. #2 Re: Reduce Engine Power 
    GTP Level Member LeadfootCJ7's Avatar
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    Is your check engine light on? Have you tried to check for codes with a scanner or code reader?
    2007 Grand Prix GXP;2002 Camaro Z28 - tune, CAI, and exhaust
    2006 GMC 2500HD - ATS high flow manifolds and uppipes, turbo back exhaust, blocked EGR, Denali headlights, Reflexxion Cown Hood
    1994 Olds Cutlass Supreme 2 door
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  3. #3 Re: Reduce Engine Power 
    Killa Bee Scottydoggs's Avatar
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    go to a parts store, autozone is one they all scan codes for free.

    could be a bad maf sensor. if it is they are pricey new and after market dont always like these cars so much, so a junk yard for a used one is the best route to go.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  4. #4 Re: Reduce Engine Power 
    I Write E85 Stickies Frosty's Avatar
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    While maf sensors go bad all the time would they cause limp mode? On my 2001 when my stock maf died it would just set the engine light on and then run in speed density mode from the map sensor.... this was bed bad bad for me because stock map sensor can only read 14 psi of boost and I run 15 - 16 on average. In a normal stock setup it would have been fine. I ended up zip tying my boost bypass slightly open so that I could finish my 500mile trip without having to drive like grandma..
    "Lets just throw more boost at it and see what happens" -Frosty
    The Defacto Guide to tuning your car for E85. Read it and learn.



    I love Decker<3
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  5. #5 Re: Reduce Engine Power 
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    Had same problem I cleaned throttle body and changed air filter worked for me .good luck
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