Question about 1990 Buick LeSabre

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I have a 1990 buick park ave that is idled very high

I put a new idle control sensor on

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You may have a broken or loose vacuum line. Another cause could be a bad IAC motor. If you have a "check engine" light, you may need a scanner to help you locate the exact problem. Don't forget to make sure that your throttle cable isn't binding and not allowing the throttle blade to close all the way.

Posted on Dec 08, 2014

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Check your car's error codes for anything you might have missed. the last time I had that problem, the knock sensor had also gone out due to a spark plug wire leak that had also done a number on the computer.

Posted on Dec 08, 2014

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Buick park ave po172


Check idle control valve.

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Faulty idle air control valve.Make sure to reset the computer after you replace the sensor.

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I have a 1991 buick park ave and it idles high when in park and when I'm driving


Try replacing your throttle position sensora(TPS). Had the same problem with my 93 park avenue.

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Sounds like you have another Vacum Leak, What is this thing idleing speed AT...?????? Vacum Leak Cause high Fast Idel...so i would check futher into more leaks

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1 Answer

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have you replaced your ignition module?

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