Thread: GTP Running Rough.. few new parts but still not running right.. HELP

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  1. #1 GTP Running Rough.. few new parts but still not running right.. HELP 
    SE Level Member azmattaz06's Avatar
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    Ok so i changed my plugs about 5,000 miles ago or less so they're not too bad..i just recently did the Wires and I've also done the fuel pump and fuel filters.. What next? i herd i should be using the NGK plugs is that true? if not maybe i should run it thru the injector cleaner machine..? anyone have anyone other clues besides what i wrote down? thanks
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  2. #2 Re: GTP Running Rough.. few new parts but still not running right.. HELP 
    Donating Users mystic231's Avatar
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    Quantify "still not running right." At idle, going down the road, hard starting, no boost?
    '98 Bright Red GT 278,000 miles and counting...
    '02 Galaxy Silver GTP GMPP Suspension, F Body front brakes, TDC FWI intake, Ported M90, Intake, and Throttlebody, Overkill PCM
    '02 Bright Red GT
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  3. #3 Re: GTP Running Rough.. few new parts but still not running right.. HELP 
    GTX Level Member Rather B Blown's Avatar
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    did you gap the plugs before you put them in?
    Quote Originally Posted by Reptile
    It sounds like you accidentally stuffed a midget in the downpipe, and he's hammering out an SOS to get out.
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  4. #4 Re: GTP Running Rough.. few new parts but still not running right.. HELP 
    SE Level Member azmattaz06's Avatar
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    yes im gapped the plugs.. and by not running right i mean running rough kinda feels like maybe a miss or something like that.. after all that i'd expect better gas milege also it's getting about 22mpg..
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  5. #5 Re: GTP Running Rough.. few new parts but still not running right.. HELP 
    The Blue One blueguy's Avatar
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    Again...what do you define as not running right? Is it not boosting? Is there a vacuum leak? What? Has it thrown any SES lights? Try and help us out man, a misfire sounds like you didn't get the wires on right or something since you just changed them or your coil packs might be bad. Anyway you can get a video of it?
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  6. #6 Re: GTP Running Rough.. few new parts but still not running right.. HELP 
    SE Level Member azmattaz06's Avatar
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    Well first off it was running the same before the new plugs so thats not it. And im not sure how to explain it it's boosting fine but when it's at idle it's not just a smooth running engine it' kinda missing and not like a good running engine should sound..
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  7. #7 Re: GTP Running Rough.. few new parts but still not running right.. HELP 
    SE Level Member kevins97gtp's Avatar
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    did you check the vacuum line running to the map sensor cause thats the one the works the boost gauge. as far as the misfire try cleaning the mass air flow sensor cause i had that problem and found some dirt on it and that helped and it didnt give me a code so u can try that one.
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