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high idle
03-31-2011, 09:49 PM
Post: #1
high idle
I have a 94 cutlass supreme that idles at 1500 whether it's under a load or not.the check engine light comes on above 50 mph but goes out below that speed. I don't have a scanner, but also don't want to throw sensors at it all day either. laid off and can only afford what I have to. this has to be a common problem , at least i'm hoping so . any input would be appreciated.
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03-31-2011, 10:25 PM
Post: #2
RE: high idle
First thing to do is get to someone with a scan tool and get the codes. Have them cleared so anything in the future will be fresh and not old history. Post those codes here.

Most auto parts stores will do a scan for free in the hope you will buy your parts there in the future.

That said, a high idle can be many things but the easy stuff would be to look at all of the vac hoses for proper attchment and not being cracked or soft. The second thing would be to clean the IAC and see if that helps.

Keep us posted on what you find.
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