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High idle on 2003 Malibu
I have a 2003 Malibu with 135,000 miles. It's been a good car for my 70 mile daily commute. Last week as I was driving to work the idle suddenly jumped to about 3,500 rpm's. I turned it off and restarted it and it was back to normal. This has happened a few times since where the idle will go to anywhere from 1,500 to 3,500 and every time when I shut it down it restarts fine.
Any suggestions as to what could be causing this would be appreciated.
Thanks, Bogieb

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