Question about 2002 Pontiac Aztek

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05 pontiac Aztek idle problems

My car has started idleing 1500 in drive, 3000 in park. Just replaced Throttle position sensor and that did not help. the mileage is 67000. any idea on what could be the problem.

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  • Shane Peterson May 11, 2010

    usually when this happens, it's because the engine is pulling air from a unhooked vacuum hose, stuck throttle, or an intake leak. a few questions:



    when the car is running, do you hear a loud hissing sound under the hood?



    what size is the engine?

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Sounds like you have a vacum leak . pop the hood and look for hoses that look like they are disconected or broken . most common are right above the throtle body

Posted on Jan 25, 2009

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