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Thread: RPMS going up and down whenever its idle?

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    03 Mustang Gt Regular Member chasev27's Avatar
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    RPMS going up and down whenever its idle?

    Whenever my car idles for awhile the rpms go up and down and then it starts to die? I just instead headers on my car so is that why its doing that. IF so how do i fix it?
    Next Time You Think Your Perfect Try Walking On Water

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    Smells like someone died Regular Member 2004gt's Avatar
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    Tune and check o2 sensors

    Quote Originally Posted by saleen-00 View Post
    9k for vette wheels/tires?

    you must be bubba's bitch in the car industry cause seems like everybody rapes your ass
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  3. #3
    03 Mustang Gt Regular Member chasev27's Avatar
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    Quote Originally Posted by 2004gt View Post
    Tune and check o2 sensors


    alright ya i put on brand new o2 sencors so i guess its a need of a tune.. tune as in dyno tune or timing time?
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    I gotta catch a glimpse of those warlocks!!! AWDFTW's Avatar
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    Quote Originally Posted by chasev27 View Post
    alright ya i put on brand new o2 sencors so i guess its a need of a tune.. tune as in dyno tune or timing time?
    Dyno tune. You can't do a timing tune, because you don't have a distributor.


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  5. #5
    Evil Angel What is SilverStar you ask?  Click here to find out! Bigdrumma22's Avatar
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    Yes, you probably just need a custom tune now. My car and crappy handheld handled all my bolt on mods until the longtubes came. Then it couldn't take it anymore and started throwing codes or just not running right at all. Got it tuned and problem solved.

    02 Mustang GT, 2??rwhp/3??rwtq on 87 CMR Tune, Roush short throw rally style shifter, King Cobra Clutch, C&L 85mm CAI/Plenum, BBK/Roush 75mm T/B, Steeda U/D's, Kooks L/Ts w/catted X, Bassani Cat-back, Eibach Pro-kit Springs, Energy Suspension bushings, KYB AGX's, Hotchkis C/C plates, Steeda "Custom" Bump Steer, UPR ProStreet rear control arms, Brembo/Hawk, BFG's, Mach 1 Shaker, Dual Halo Projector 8k HIDs, Kenwood: KDC-X790, KAC-9102D, KAC-8402; Infinity: 6810CS, 6812CF; Orion XTRPro series subs
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    Missin my coupe Regular Member joshuaanzaldua's Avatar
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    iac?

  7. #7
    03 Mustang Gt Regular Member chasev27's Avatar
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    Quote Originally Posted by Bigdrumma22 View Post
    Yes, you probably just need a custom tune now. My car and crappy handheld handled all my bolt on mods until the longtubes came. Then it couldn't take it anymore and started throwing codes or just not running right at all. Got it tuned and problem solved.

    alright thanks
    Next Time You Think Your Perfect Try Walking On Water

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