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    Thread: Chevrolet AVEO 1.4 LS: RPM automatically increasing and not coming down on start

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      Chevrolet AVEO 1.4 LS: RPM automatically increasing and not coming down on start

      Hello, I am facing an issue with my Chevrolet AVEO, when I start the car the RPM goes beyond 3000+(btw 3200-3400) and stays there forever and doesn't come down. When I switch on the A/C the RPM slightly comes down to 2900-3000 level but doesn't come down further. I got the Throttle body replaced from the Chevrolet Service Center but no change. Pls advise and help. Thanks



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      Are there any engine codes?

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      Hi Daox, No engine codes.

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      i had this happen in an older chevy(not-an aveo). Turned out the PCM was bad. Had to replace it. Bu I'd be suprized if there were no codes for a bad PCM. Is it possible the pedal is hung up on something? or maybe the throttle body(know you said they replaced it, doesn't mean they installed correctly)

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      Thats the strange part, no codes. And no Pedal or installation problem. However interesting point I noticed is when the Service Center team reset the car through Computer it runs normally for a day or so then the same problem occurs back again. The reset has been done twice in the past few days.





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