Thread: Normal idle range for Grand Prix GTP

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  1. #1 Normal idle range for Grand Prix GTP 
    SE Level Member GTP2188's Avatar
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    Hey everyone,

    I was wondering what the normal idle range should be when our cars are warm on a 3.8 S/C. My has a wondering idle from 900-1100 when parked and sitting still. You can hear the exhaust changing notes and the idle is a little rough when it is floating from 900-1100 but im guessing it should be still. Any ideas would help.

    Thanks,
    Brad
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  2. #2 Re: Normal idle range for Grand Prix GTP 
    I live here. TLSheff's Avatar
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    Mine is like that until it warms up to op tmp. then drops to like 800-900, 700-800 in drive. Although, colder climates may affect this, i imagine its running fine

    Quote Originally Posted by AmericanSoldier View Post
    ...not scanning/monitoring your motor is like bangin a hooker and you just HOPE your not infected.
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  3. #3 Re: Normal idle range for Grand Prix GTP 
    Killa Bee Scottydoggs's Avatar
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    i idle at 800 rpm warm, and up to 1100- 1200 cold.

    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: Normal idle range for Grand Prix GTP 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    its should be around 700-800 atfer warm.

    sounds like you may have a vacuum leak and maybe you should clean your maf sensor.

    SMGPFC Member #1
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  5. #5 Re: Normal idle range for Grand Prix GTP 
    The Blue One blueguy's Avatar
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    Mine idles at 650...but what do I know
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  6. #6 Re: Normal idle range for Grand Prix GTP 
    I live here. TLSheff's Avatar
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    Quote Originally Posted by bluegtp91 View Post
    Mine idles at 650...but what do I know
    LOL yea Mr. Ihaveacamandyoudont

    Yours is SUPPOSE to

    Quote Originally Posted by AmericanSoldier View Post
    ...not scanning/monitoring your motor is like bangin a hooker and you just HOPE your not infected.
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  7. #7 Re: Normal idle range for Grand Prix GTP 
    The Blue One blueguy's Avatar
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    oh hai, I haz cam.

    It shakes erreethang.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  8. #8 Re: Normal idle range for Grand Prix GTP 
    SE Level Member GTP2188's Avatar
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    Thanks guys I'll clean the MAF and see if it helps the rough idle
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