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2003 PT Cruiser GT Idles High then Low then High

 
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Old 08 Aug 2017, 08:47 am
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Default 2003 PT Cruiser GT Idles High then Low then High

Hi all :-)
I just got done rebuilding the motor on my 2003 PT Cruiser GT (Turbo) and when I start the car the idel shoots up then low, then high and low and it keeps doing it.

Any idea what's causing it?

Best,
-Bill
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Old 08 Aug 2017, 08:51 am
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Default Re: 2003 PT Cruiser GT Idles High then Low then High

Vacuum leak or throttle body slightly open. Vacuum lines near the turbo are sometimes forgotten, and the upper to lower intakes can often leak after a rushed repair.

Car tries to lower the idle with timing since it can't with air, and that's the high low you hear
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Last edited by rob302; 08 Aug 2017 at 08:53 am.
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