Question about Chevrolet Blazer

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When my 1996 blazer accelerates it gets to about 30mph then the rpms drop to nothing, even when the pedels to the floor. if you gently ease it up to about 60mphbut as soon as you try to give it more gas your done. you can rev it up and red line it when its in park.

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  • ddsege May 08, 2010

    now I have looked up the codes and one was cat converter not effective, then o2 sensor bad, then something to do with some transmission relay or sensor(wasnt very specific), and one error it couldn't read. I removed the cat and tried to drive it, still same result. took fuel filter off, will pick one up tomorrow. Ive noticed that the problem gets worse the longer I drive. when cold I took a 20 mile drive got it up to 60 and set the cruise no prob til I tried to resume after a stop. the trip back home couldn't even get it up to 60.

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I would check the fuel pressure. Does the check engine light come on at anytime? You may have a bad TPS (throttle postion sensor) or a bad mass air flow sensor. I would also check the air filter.

Posted on May 08, 2010

  • James Milzheimer
    James Milzheimer May 09, 2010

    I would really suspect that O2 sensor, especially if it's showing up as a code. The transmission code could be the result of how the vehicle is acting.

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