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Thread: accelerates by it self

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  1. 02-07-2008, 08:31 PM #1
    tito21
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    accelerates by it self

    tne car accelarates up to 2000rpm"sand decreaes by it self. it does it
    went it feels like it,i thougth it was the aftermarket intake so i put the
    stock intake back and it still does it. what can it be?:smt102
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  2. 02-07-2008, 08:35 PM #2
    6G72Galant
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    When does it do this? When the car is at idle in Park? Or at idle while stopped at a light? Does it do this when youre running the defroster or air conditioner?
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  3. 02-07-2008, 08:38 PM #3
    tito21
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    my car is a 5 speed so when it is on neutrol it does it
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  4. 02-07-2008, 09:38 PM #4
    4-G-rim
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    Sounds like your IAC (Idle air control) valve has crapped out. It constantly idles up and down on idle right?

    1991 Galant VR4 1948/2000_________1996 Galant "S" 5 speed 2.4L turbo
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  5. 02-07-2008, 10:35 PM #5
    Divinity
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    Kinda sounds like that problem I had with the TPS in my other car
    ~Lady Driven~

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  6. 02-07-2008, 11:02 PM #6
    dknight3
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    if you recently unplugged your battery that could be it, give your car some time to re-learn everything it needs to.

    My Garage
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  7. 02-08-2008, 04:27 AM #7
    fatal1
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    check the throttle cable as well & lube it a bit
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  8. 02-08-2008, 07:47 AM #8
    criz067
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    I have had two cars in the past that have done that while in park and it was a vaccum leak. They were both automatics.
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  9. 02-08-2008, 07:54 AM #9
    bronxbombr
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    Im thinking IAC, but let me know wassup.

    Not how fast your car goes but how good u drive going fast.
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  10. 02-08-2008, 12:05 PM #10
    Kalamidad
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    Quote Originally Posted by criz067 View Post
    I have had two cars in the past that have done that while in park and it was a vaccum leak. They were both automatics.

    Step 1
    -Pedro
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