Thread: *SOLVED* Starts fine - will not idle or run by pressing pedal

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  1. #1 *SOLVED* Starts fine - will not idle or run by pressing pedal 
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    Ok, 2000 GT 100,000+ miles.
    My wifes gt was idling strange past couple of days.
    rpms would go up and down but not consistently.
    Drove the car down state no problems, then drove back home no problems.
    parked car in drive way from wed to sat morning. my daughter got in it saturday morning and it will not stay running. the engine cranks great and starts, but will not stay runing. it dies after about 5 to 8 seconds. if you press on the gas it will rev up and down and the die.
    I replaced fuel filter and no change.
    could it be a key chip issue? my daughter bought some key covers and asked me if she could put them on and i said yes. she cut the rubber coding off the key and removed it, just to find out the covers she bought would not fit. could this be a security issue? i have unplugged battery for several hours and will try in the morning. the fuel pump kicks on every time and it starts fine. but will not stay running. any ideas?
    thanks in advance
    Last edited by cptnjarhead; 10-10-2011 at 07:00 AM. Reason: solved
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  2. #2 Re: Starts fine - will not idle or run by pressing pedal 
    Perma-Banned! JK LOL Explicit_Spade's Avatar
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    Unplug your maf and see if it continues to do this.
    Quote Originally Posted by W-Body Store
    Remember, GM engineers didn't take into account your need for speed.
    Daily Driver: 06 Grand Prix GT / 9.4:1 CR / IS3 Heads / Ported Gen V / ZZP Headers / HPT Pro / Pulleys: 4.25, 3.8, 3.5, 3.4, 3.2, 3.0, 2.9, 2.7
    Projects: 86 Monte Carlo SS / 98 Sonoma / 74 Honda CB750
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  3. #3 Re: Starts fine - will not idle or run by pressing pedal 
    GrandPrix Junkie dpzelenak's Avatar
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    mostly its the iac, or a vacuum leak
    cleaning the tb may help and clean the maf too,

    SMGPFC Member #10
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  4. #4 Re: Starts fine - will not idle or run by pressing pedal 
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    thanks for the reply
    "Unplug your maf and see if it continues to do this"
    i did and no change.
    thanks again!
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  5. #5 Re: Starts fine - will not idle or run by pressing pedal 
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    IAC?
    what is that?
    thank you for the reply
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  6. #6 Re: Starts fine - will not idle or run by pressing pedal 
    GrandPrix Junkie dpzelenak's Avatar
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    idle air control, lets the motor idle

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  7. #7 Re: Starts fine - will not idle or run by pressing pedal 
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    Quote Originally Posted by cptnjarhead View Post
    IAC?
    what is that?
    thank you for the reply
    ahh.. Idle Air Control Valve?
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  8. #8 Re: Starts fine - will not idle or run by pressing pedal 
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    Quote Originally Posted by dpzelenak View Post
    idle air control, lets the motor idle
    thanks.
    Is there an error code for that?
    I can get access to a code reader.
    thanks again
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  9. #9 Re: Starts fine - will not idle or run by pressing pedal 
    GrandPrix Junkie dpzelenak's Avatar
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    yes but if the battery's unplugged then it wont read it at first but after a time of too of trying to run it then it should throw a code but it could just be that its dirty and has build up on it clean the tb blade before replacing anything

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  10. #10 Re: Starts fine - will not idle or run by pressing pedal 
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    MAF cleaner did the trick.
    thanks for the replies.
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