Question about 2001 Chevrolet Malibu

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Chevy Malibu 2001 with 89,000 miles idling too high during park

My Chevy Malibu 2001 with 89,000 miles has started idling too high during park. It idles up to about 3 -4. I recently had the brakes done & an oil change and it had been idling a little below 1 before i took it to the mechanic. Now while driving I don't need to press the gas pedal much and it will get up to about 40-50 mph if i don't keep my foot on the brake. Its is difficult for me to brake sometimes when I am trying to slow down.

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Back to the mechanic - sounds like either an IAC motor or TPS sensor is the problem, but also could be the throttle cable (sticking leaving the throttle not fully closed).

Posted on Jul 05, 2017

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Posted on Jan 02, 2017

ZX2Fast
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SOURCE: My 98 Chevy Malibu v6 3.1 liter engine high idling

You probably have a large vacuum leak. With the engine running, listen under the hood for a hissing sound. Check all of the rubber lines running from the intake.

Posted on Mar 05, 2010

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Try hitting the brake off and on to see if the rpm changes when you do that with the car in park. If it does, you may have a ruptured brake booster. A fluctuating rpm while your car is in park with the brake on indicates a vacuum loss. Other things may cause a vacuum leak including the air conditioner controls inside the vehicle. Other things that cause this may be cruise control or your Air Conditioners high idle solenoid.

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Starts/stalls won't run until pedal tapped, 2 miles in town, 6 miles highway, then1000-1500 idle. shut down 9 hours, start/stall tap pedal runs return 6 mi. highway,2miles town same high idle. checked code...


Check your IAC motor (Idle Air Control) It could be sticking open.
Ps. Might be called Idle Speed Control motor it depends on the make and i forget what chevy calls theres.

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