Thread: 98 GTP Trouble starting while cold

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  1. #1 98 GTP Trouble starting while cold 
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    Im having a trouble starting my car in the morning. Sometimes it wil start then die. Then when i try it again it wont start unless i give it gas but then it will die unless i keep giving it gas. After about 5-10 of warming up everything is fine just idles low.
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  2. #2 Re: 98 GTP Trouble starting while cold 
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    bad fuel pump? maybe. you could need a better battery?
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  3. #3 Re: 98 GTP Trouble starting while cold 
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    ok but i dont think its the fuel pump because after its been driven for about 30 mins its ok an starts right up and has full power when i floor it.
    my only problem is starting it while it cold it will die or wont start unless i give it gas
    but when i release off the gas it dies. I have to keep my foot on the gas to warm it up or else it will die.
    When its warm some times it wont start but when i give it gas it wont die after that it will idle just fine.
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  4. #4 Re: 98 GTP Trouble starting while cold 
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    After driving it today for about an hour, if i park it and let it sit for about 15 minutes it sometimes will idles low like around 600 but then it will go away after a few minutes and idle normal. Could it be an injector?
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  5. #5 Re: 98 GTP Trouble starting while cold 
    GrandPrix Junkie CTKGP09's Avatar
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    MAF sensor needs cleaned or replaced, happened to me too
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  6. #6 Re: 98 GTP Trouble starting while cold 
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    If its the MAF sensor why does it not start cold unless i give it gas and i have to
    keep my foot an the gas or it will die. Even sometimes when its warm i have to give
    it gas to start but i dont need to keep my foot on the gas like i do at cold starts.
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  7. #7 Re: 98 GTP Trouble starting while cold 
    GrandPrix Junkie CTKGP09's Avatar
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    idk why its does that but mine did the excact same thing, try unplugging it and see if it dies then, if it runs better then the MAF is dirty or bad
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  8. #8 Re: 98 GTP Trouble starting while cold 
    looks fast.... its slow:) beckys2000gt's Avatar
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    mine did the same, had 2 guys cleaning my maf at the meet, start everytime now thanks guys
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  9. #9 Re: 98 GTP Trouble starting while cold 
    GTP Level Member SuperSport's Avatar
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    The Idle Air Controller was bad in mine. Was causing the same exact symptoms. That fixed it for me.
    2001 Grand Prix GT Coupe
    Comp G Wheels - SS Corners - Infinity Sound - Tint - Digital DIC Swap - 893 Fogs

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  10. #10 Re: 98 GTP Trouble starting while cold 
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    Thanks SuperSport I think that was the problem. I cleaned up my idle control vavle and every since its been stating up every morning without me pressing on the gas for it to start an stay running on cold starts.

    Thanks you guys
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  11. #11 Re: 98 GTP Trouble starting while cold 
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    No problem. Sometimes its the simplest (and cheapest) solutions that fix issues.
    2001 Grand Prix GT Coupe
    Comp G Wheels - SS Corners - Infinity Sound - Tint - Digital DIC Swap - 893 Fogs

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