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Old 01-11-2011, 09:10 PM   #1
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Default 2001 grand am idle and shift problems

Hey, new to this forum. Got myself a new to me 2001 gr am. 2.4l. Idles at 1400rpm hot and shifts really late driving. Unplug the tps when running and the idle returns to normal so I replaced it. It changed nothing, it still runs the same. The tps shows 7%throttle and .47volts in the datastream. Has no codes and no apparent vacume leaks.

Any ideas?????
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Old 01-11-2011, 09:49 PM   #2
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Start with cleaning the throttle body. Also, are you sure the TPS is installed right? Take a look at this. https://www.gmforum.com/normal-maintainence-138/throttle-position-sensor-tps-replacement-284336/ Should be close.
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