Thread: acceleration issues

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  1. #1 acceleration issues 
    GT Level Member tmackster's Avatar
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    i posted this a while back and am still @ a stand still I have a 2006 GP GT, 3.8 SC. My car will not accelerate properly once i hit 30 MPH. Hell. it wont accelerate @ all unless i barely...and i mean barely press the gas pedal. I have no check engine light on. I also took of O2 sensor near the cat and the CAT is not the issue here. Someone please help b/c i am @ my wits end and don't wan't to go pay $80-$100 for a diagnostic.
    '06 GP GT // Debadged // 20" Niche Venice rims w/toyo proxes4 tires, ram air inferno hood, front air dam, SE rear valance, black l.e.d. tail lights, CAI, MSD Ignition wires, Pioneer 6x9, & 10,000K HID headlights!!!
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  2. #2 Re: acceleration issues 
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    Does it feel like the car loses power or does it feel like something is holding the engine back?
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  3. #3 Re: acceleration issues 
    GTP Level Member Rico's Avatar
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    Post on one of your earlier threads to bump it to the top.
    It's a CUMMINS Dodge not a Dodge Cummins
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  4. #4 Re: acceleration issues 
    Killa Bee Scottydoggs's Avatar
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    check the wires to the plug on the TB, and look over the gas pedal its self, you got a switch under the pedal, instead of a cable. could be as simple as a pebble stuck under it jamming the switch.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: acceleration issues 
    GT Level Member tmackster's Avatar
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    Quote Originally Posted by hitman92499 View Post
    Does it feel like the car loses power or does it feel like something is holding the engine back?
    it doesn't really lose power...it will still accelerate very very slow if i barely push the gas pedal, however if i push the gas pedal down further...it just bogs down and doesnt accelerate @ all after 30 MPH
    '06 GP GT // Debadged // 20" Niche Venice rims w/toyo proxes4 tires, ram air inferno hood, front air dam, SE rear valance, black l.e.d. tail lights, CAI, MSD Ignition wires, Pioneer 6x9, & 10,000K HID headlights!!!
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  6. #6 Re: acceleration issues 
    Killa Bee Scottydoggs's Avatar
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    pop the air tube off the TB, and have someone hit the gas, so to see if the butterfly is working right.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  7. #7 Re: acceleration issues 
    GT Level Member tmackster's Avatar
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    Quote Originally Posted by scottydoggs View Post
    pop the air tube off the TB, and have someone hit the gas, so to see if the butterfly is working right.
    TB? butterfly? sorry for being noobish. lol
    '06 GP GT // Debadged // 20" Niche Venice rims w/toyo proxes4 tires, ram air inferno hood, front air dam, SE rear valance, black l.e.d. tail lights, CAI, MSD Ignition wires, Pioneer 6x9, & 10,000K HID headlights!!!
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  8. #8 Re: acceleration issues 
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    Sounds like it could potentially be the pedal position sensor but that should throw a code.
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  9. #9 Re: acceleration issues 
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    He means the throttle plate inside the throttle body...it's how the air gets in the engine.
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  10. #10 Re: acceleration issues 
    Killa Bee Scottydoggs's Avatar
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    yeah what hes said.

    with that being said, have you ever cleaned the TB, they get gummed up and stick, so if its not opening up it will flood the engine with gas, and not go fast with out the proper air being let in.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  11. #11 Re: acceleration issues 
    Killa Bee Scottydoggs's Avatar
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    and a extremely clogged air filter will also choke your engine out. check that as well.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  12. #12 Re: acceleration issues 
    GT Level Member tmackster's Avatar
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    Quote Originally Posted by hitman92499 View Post
    He means the throttle plate inside the throttle body...it's how the air gets in the engine.
    don't know where that is, however i do have a Haynes Manuel.... I have never cleaned the TB (throttle body)....and i know its not the air filter b/c just cleaned it b/c have a cone filter
    '06 GP GT // Debadged // 20" Niche Venice rims w/toyo proxes4 tires, ram air inferno hood, front air dam, SE rear valance, black l.e.d. tail lights, CAI, MSD Ignition wires, Pioneer 6x9, & 10,000K HID headlights!!!
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  13. #13 Re: acceleration issues 
    Killa Bee Scottydoggs's Avatar
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    heres a how to, this is for the older model, you wont have throttle cables to deal with. or the maf in the TB. same deal to get it off and clean it tho.


    http://www.grandprixforums.net/how-c...ody-48650.html

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  14. #14 Re: acceleration issues 
    GT Level Member tmackster's Avatar
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    hmmm..well can't hurt to give it a shot...At least if this is not the cause of my problem..i will have a clean TB Any other suggestions that may be causing my car to bog down?
    '06 GP GT // Debadged // 20" Niche Venice rims w/toyo proxes4 tires, ram air inferno hood, front air dam, SE rear valance, black l.e.d. tail lights, CAI, MSD Ignition wires, Pioneer 6x9, & 10,000K HID headlights!!!
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  15. #15 Re: acceleration issues 
    GT Level Member tmackster's Avatar
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    Well. i changed out the front drivers side wheel assembly (hub) b/c i know the wheel bearing was bad...Once i changed it...it fixed the acceleration issue. However my car shakes and vibrates when i accelerate. I was told this was the CV Joint (i know they need to be changed b/c they click when u turn). Would this be the inner or outer CV Joint? This is an area i don't have much expertise in.
    '06 GP GT // Debadged // 20" Niche Venice rims w/toyo proxes4 tires, ram air inferno hood, front air dam, SE rear valance, black l.e.d. tail lights, CAI, MSD Ignition wires, Pioneer 6x9, & 10,000K HID headlights!!!
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  16. #16 Re: acceleration issues 
    Killa Bee Scottydoggs's Avatar
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    you just change the whole axle.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  17. #17 Re: acceleration issues 
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    My 04 gtp won't acclerate after 30 either it does exactly what you put! How did you fix yours?
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  18. #18 Re: acceleration issues 
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    Help
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