Question about 2002 Chevrolet TrailBlazer

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Engine wants to die and idles rough when slowing down and you can smell gas

My 2002 TB starts fine but after it warms up and I drive it when I go to slow down like at a red light it acts like it wants to quit and you can smell gas sometimes. When I give it gas to go it does fine. Can someone tell me if it is sensor or what it may be.

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  • Anonymous Dec 31, 2008

    my trailblazer does the same thing i have taken it to couple dealers and they cant figure it out.

  • tburge736 Jan 05, 2009

    my son's 2002 trailblazer does the same thing. we just replaced the battery and the alternator and it started doing this after they were changed out. it never done this prior to changing them out. by the way, the alternator and battery were both bad(had them checked prior to changing out). it only hesitates and dies when truning on the a/c and stopping at a redlight, etc...

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The throttle body is probably gummed up. You need to buy some throttle body intake cleaner and clean the throttle body. After you've cleaned it up, recconnect the battery and it should reprogram the engine's idle and your problem should be solved. It's pretty easy.

Posted on Feb 10, 2009

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Mine had the same problem, check into a new computer for it..more or less the ECM part...i had to replace all the computer in mine and seems to have fixed it. does it also have other quarkie electrical things..like gremlins...if so it the computer. Good luck

Posted on Jan 07, 2009

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Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
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http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html

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After replacing brake rotors and pads, brake pedal remains on floor? http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html

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accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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This will help.

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