Question about 1996 GMC Jimmy

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1996 Gmc Jimmy Acceleration

Hi, i replaced my fuel filter, fuel pump seems to work good. But when accelerating, the truck seems to putt then slowly follow through like normal. So in other words, it's impossible for me to burn the tires...

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  • Lummsebay Jul 07, 2008

    Air filters about a month old, and theirs about 120,000 on the engine and over 200,000 on the body.

    When EGR valve is unplugged, the truck won't start. Any other suggestions would be well appreciated.

  • Lummsebay Jul 08, 2008

    Ok, i unplugged it again and it DID start (Dont know why it didn't last time) and the acceleration still acts up. But just to clarify, it dont actually (PUTT) but it dont have the pickup it supposed to when accelerating. Say, if i mat the accelerator, it won't go up to speed right away, it takes about 4-5 seconds before it actually picks up speed. It kind of sounds like it wants to stall, but not totaly. And again, i really appreciate your post's and more would be very helpful. Thanks

  • Lummsebay Jul 09, 2008

    Thanks Pierre, But i replaced my TPS about 3-4 months ago, my truck wouldnt start at all then, so i just replaced everything that could be a problem including: TPS, Pick-up Coil, Control Modual, Cap, Rotor, O2 sensors, air filter and fuel filter. Any other ideas?



    Thanks Again

  • Marty marty May 11, 2010

    how's the air filter?...how many miles?

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  • Master
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Here is the checklist from manual:
rate me fixya since your problem entails more than meets the eyes here...
1996 Gmc Jimmy Acceleration - d7a687e.jpg

Posted on Jul 09, 2008

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  • GMC Master
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Check our egr valve if vale open to fast to mush air create hesitation disconnect the egr and try it out when accelerating egr valve open to put extra air in engine to burn polution bad valve create hesitation engine noise hope it FIXYA our problem thanks pierre

Posted on Jul 04, 2008

  • Pierre Laplante Jul 08, 2008

    egr valve got nothing to do with car not starting make sure its the egr valve you disconnct let me know pierre

  • Pierre Laplante Jul 08, 2008

    ok is it like the old carburator when you use to give gaz and nothing mush all of a sudden it goes if it thatit look like a throttle position sensor (TPS) the normal voltage is around 0.60 mv when you give gas it gradualy goes up but if you have a defect one the a blank spot on it it goes from 0.85 mv and jump to 1.10volt beetween 85 to 1.10v there nothing except more air going in to mush air



    not enought gas create hesitation after you pass 1.10v it ok look at give me new post as often as you whant i help you with it good luck pierre

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