Question about 1998 Chevrolet Venture Cargo

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I think maybe my TPS is gone in my 1998 venture mini van. My check engine light is on and my van stalls out on acceleration once having already come to a stop and taking off again. I have replaced both crankshaft sensors, the fuel pressure regulator, the Mass airflow sensor. When I first start the van and I rev the van the rpm's never goes past 2. It's like when I try to rev it up it chokes. Please help....

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  • mflynn_69 May 16, 2009

    Here are the DTC codes that I was give, P0102 and P0134

  • mflynn_69 May 16, 2009

    Yes i have replaced the MAF. Could you tell me where to find the restricted exhaust or is this something that only a machine can find fault with?

  • mflynn_69 May 16, 2009

    Would this also be why my Check Engine light is on as well?

  • mflynn_69 May 16, 2009

    Thank you I will have it tested and let you know the outcome. Thanks again

  • mflynn_69 May 17, 2009

    I anm just wondering, today I smelled a kinda rotten egg smell. Any idea what that would be? Also I have a leak which looks like antifreeze close to my drivers side wheel from a hose that is coming from a circular metal piece behind the motor. Also when the van is just sitting running and I push the gas pedal the idle stays the same and if I press it right to the floor, I hear like a gong gong gong sound instead of the high reving sound. I also put my hand about 5 inches away from the tailpipe when the engine was suppose to be reving and it didn't seem to have much pressure coming out of the tailpipe. When I am trying to rev the van it's almost like it want's to stahl out. But only seems to stahl when I am driving along the road.

  • mflynn_69 May 18, 2009

    I am wondering if you think I should take the van back to a GM dealership and check the codes now that I have fixed those other things and see what comes up or just continue on with my plan to go to the muffler shop?

  • mflynn_69 May 18, 2009

    Ok Thank you so much, I will do that. I am a single mother of three and I have spend so much money already. Thanks again and I will let you know how everything turns out.

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You should really have the van scaned before you put any more parts on it. Autozone will scan it for free. You could spend alot of money just putting parts on it. If you can come up with a code/DTC for your problem then let me know and I will be better able to help you. Good Luck

Posted on May 16, 2009

  • 4 more comments 
  • Mike White
    Mike White May 16, 2009

    P0102 is a mass air flow code, P0134 is an 02 code. These are not related to the TPS. You have repalced the MAF sensor, correct? It sounds like you may have a restricted exaust. It would cause both of these codes and also cause your no power issue. You can have the back pressure checked at any muffler for just a few bucks. If you need a cat then you can expect to spend about $250 and up. Restricted cats are a common issue on many older vehicles. Have it checked soon as it can end up causing major engine damage. Good Luck

  • Mike White
    Mike White May 16, 2009

    It is best to let a muffler shop test it. You can buy a back pressure gauge from NAPA parts store. It will fit in the hole for the front 02 seneor. It will have to be removed to test it. The gauge will have instructions. By the time you but a gauge you will have spent enough to have it tested at a muffler shop. Good Luck

  • Mike White
    Mike White May 16, 2009

    Yes, the two codes you gave me are related to engine pressure. The first code is the ammount of air the motor gets. The second is the flow out of the engine. If the restriction in the exaust is bad enough it can cause all kinds of codes. It should not cost but about $30 to $40 to have it tested. The money will be well spent.

  • Mike White
    Mike White May 16, 2009

    Please do, and let me know if I can help with anything.

  • Mike White
    Mike White May 18, 2009

    The rotten egg smell is typical of a converter going bad. You should feel quite a bit of exaust while reving the motor, This is why I feel like you have some type of restriction. I see it alot at work. The noise you are hearing is most likley the rev limiter when you are not in gear to pritect the engine. If you have a leak then I would really get it fixed too. If it is a hose then it should be cheap to fix. Please let me know if I can help.

  • Mike White
    Mike White May 18, 2009

    I work for a GM dealer, but a muffler shop will cost you far less. All I am offering you is the same advise I would my family. A cat from GM would about $600. The muffler shop about $250, as I said the test is cheap and could keep you from throwing good money away.

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