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2005 Chevrolet aveoIs it just me or do all the engines seem like the idle drops way too slow after revving the engine in neutral or between gears.. is there anything you can do to make the RPM's come down faster?
Is it just me or do all the engines seem like the idle drops way too slow after revving the engine in neutral or between gears.. is there anything you can do to make the RPM's come down faster?
That's completely subjective without additional information. If you provide some detail and numbers, I could compare mine to yours. Cold/warm/both; RPMs when revved; RPMs at idle; how many seconds does it take to get back down there?
Engine warm... idle over 1000 1500 rpm takes rpms 3 maybe 4 seconds to get under 1000 rpm... hard to shift smoothly because the engine is revved up higher than rpm should be when going into next gear.
My '05 5-sp has never done anything like that, and IMO something is not right there with your Aveo. Have you checked the functioning of the TPS? Or perhaps if the throttle body has enough gunk, then maybe the butterfly is getting hung up on it as it's trying to close. If not one of those,then a restriction in the throttle cable or gas pedal comes to mind, but I'd guess the chances of a problem like that hanging around are somewhat remote.
I have a 2005 Aveo that the idle goes way up to 2,000 rpm and at times stays there? I cleaned the throttle body and the IAC and it made it worse! I have no engine codes, but I suspect something is wrong with the IAC?
I've done the same things as jayman and I agree it has to have something to do with the IAC but I don't want to just throw parts at it.
I have a new IAC coming from Nappa today. I really hope it fixing it, becuase I can't drive it with 3,000 RPM idle!
I have a 2008 Aveo also with over 200,000 miles on it, that is sitting becuase it needs a new clutch, but that is the only thing I ever had wrong with it, becuase replacing the timing belt and water pump every 50,000 miles.
It sounds like my idle isn't as far out of control as yours... please report back on how the new IAC valve works.
The new IAC valve fixed the issue! Has not idled under 1,000 in months! The part was $105 at Nappa. I could not find anyone who has replaced it on a Aveo, so it was gamble. I disconnected the battery to reset the computer and shut the car on and off 4 times running it for 4 minutes each so the new valve would learn and that did it!
MetroMPG (10-19-2016)
Good to hear it's solved the problem.
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