Question about 1992 Buick Skylark

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High Idle problem sometimes up to 2000 rpm. Have found out that when this occurs I can turn the key off and back on again before the engine dies and rpm's goes back down to normal. Sometimes have to repeat this. Have replaced idle postioning sensor with same results. This is on a '92 Buick Skylark with a 3.3 liter V6.

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  • pai_ger_5 Nov 18, 2008

    No I didnt replace the iac motor but i did replace the tps and the code on the computer still throws up throttle postioning sensor. if i remember right its code 22. i also took the computer out and had it tested and it tested good.

  • Anonymous Apr 01, 2014

    code 453 idle sometimes at 3000 and stay there.unplug tps go down reg idle

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Did you replace the iac motor or the tps , iac is the idle air control and the tps is the throttle position sensor

Posted on Nov 12, 2008

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I have the same exact problem, but with idling roughly between 700 and sometimes upwards of 2000+ RPM.  I don't have the problem you do as far as the engine heat goes, but I definitely feel the tug, hear the engine sounding bogged down at stops, and when in neutral, finding it idling extremely high.  My check engine light had come on just this past month (with this problem occuring for a little over a year now), and it turns out I have a bad Throttle Positioning Sensor, which my mechanic says can cause the high idling.  I'm replacing the sensor this weekend with a dealer part, which I got for $102, so I'll post again once it's done to let you know if that fixed the problem or not.
Hope this helps,
Dan e-mail: dkisme2@hotmail.com

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