Thread: Acceleration problems.

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  1. #1 Acceleration problems. 
    2004GrandPrixGT1
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    Default 11-18-2012
    Hey guys, posting on behalf of a friend. 2003 impala base model 3.4. Says when you accelerate it doesn't go and it jerks to try and go, if you let off the gas and press it again it goes. ~213,000 miles. Original tranny and motor. Oil changed every 3500 miles since 150,000 miles. Please help guys.
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  2. #2 Re: Acceleration problems. 
    SlowNA06
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    Default 11-18-2012
    Your cat is clogged. Replace it.
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  3. #3 Re: Acceleration problems. 
    2004GrandPrixGT1
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    Default 11-18-2012
    There was a replacement magnaflow one put on maybe 20k ago.
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  4. #4 Re: Acceleration problems. 
    SlowNA06
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    Default 11-18-2012
    Clogged fuel filter?
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  5. #5 Re: Acceleration problems. 
    2004GrandPrixGT1
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    Default 11-18-2012
    Could be, I don't think it's been changed in awhile, would this cause occasional hesitation?
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  6. #6 Re: Acceleration problems. 
    SlowNA06
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    Default 11-18-2012
    It's a 30,000 mile part, like the intake air filter.

    Don't forget your spark plugs and spark plug wires.
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  7. #7 Re: Acceleration problems. 
    dsmuts
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    Default 11-18-2012
    Intake manifold gasket ever been changed? Who am I kidding with those miles its probably been changed twice lol.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  8. #8 Re: Acceleration problems. 
    2004GrandPrixGT1
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    Default 11-18-2012
    Actually it hasn't! Crazy huh?
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  9. #9 Re: Acceleration problems. 
    dsmuts
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    Default 11-18-2012
    Its probably leaking like hell then
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  10. #10 Re: Acceleration problems. 
    2004GrandPrixGT1
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    Default 11-18-2012
    Would that fuse the hesistation? Wouldn't there be more obvious problems then?
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  11. #11 Re: Acceleration problems. 
    dsmuts
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    Default 11-18-2012
    It would cause a vacuum leak
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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