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    1. #1
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      Random High Idle

      So I have a 2004 Aveo LS and recently it has started to randomly idle higher than normal at around 1900-2200 rpm. I am not sure what would cause this. The first time it happened I cut it off and back on and it stopped but when I tried doing that the other day it kept idling high. Any help would be greatly appreciated!!

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      Administrator Daox's Avatar
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      Your engine will increase rpm for A/C use and heavy power steering use. Its not happening during that time is it?

      Do you have a check engine light?

      If not I'd try spraying some carb cleaner in the throttle body to clean up the IAC valve to see if its sticking.

    3. #3
      Should I keep it?
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      I don't use the AC because I am stingy with my fuel, and I don't think its heavy power steering use so I will try some carb cleaner and see if it helps. I will keep you posted.

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      hi, i do have a similar problem with high RPM & check engine light on. What would you suggest.

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      Hi Daox. i have a problem with my aveo 2008 salon Manual gear in idle mode if turn on A/C the engine will not increase the rpm i have change the throttle body and change the sparks also change the fuel pump also check there is no leak of air also when check it by the OBD there is not code and still same problem!! could you please advise for fix it? is this problem with the ECU unit? is there relationship between the ECU and increase the RPM? also i would like explain that when drive the car in cold everything is ok but when driving for 1 hour and put the gear to N the RPM will come to 200 then back to 800 sometimes make the A/C off.
      thanks you in advance.

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      you might also need a temp sensor, it could be kicking it into high idle thinking its cold (warm up).


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      So on the way home from work yesterday I saw it idling at 3000 rpm at one point so I swung through Advance Auto Parts and picked up some carb cleaner. While I was spraying the cleaner and shortly after it didn't seem to have done anything. Later that evening my idle returned back to normal and stayed normal on my way into work today. So it appears as though the carb cleaner fixed it!

      Thanks

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      high iddle

      Quote Originally Posted by petrified.rabbit View Post
      you might also need a temp sensor, it could be kicking it into high idle thinking its cold (warm up).
      Hi there where is that temp sensor?

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      Administrator Daox's Avatar
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      Great to hear.

    10. #10
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      So I don't know if I am just imagining things but I feel as though my tachometer is laggy, has anyone else noticed that?

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