Question about 2001 Pontiac Aztek

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IDLE WILL JUMP FROM 800 RPM TO 1500 OR 2000 RPM. WHEN DRIVING, IT MAINTANS SPEED, WHEN MY FOOT IS OFF THE GAS PEDAL, AND WILL GAIN SPEED. THIS PROBLEM DOES NOT ALLWAYS HAPPEN, BUT IT SEEMS TO BE GETTING MORE OFFTEN

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  • Pontiac Master
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Either the airflow meter or - much more likely - the throttle sensor is defective.  Have the codes read, they will point you in a much more precise direction. Once you know which just replace the faulty part - an easy job.
But you should also check the linkage from the pedal to the throttle valve and the return springs on them - maybe it sticks or the valve is forced open by the air flow because the springs are too weak.

Posted on Aug 31, 2010

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Posted on Jan 02, 2017

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