High Idle with Check Engine Light

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1996 Outback Wagon with 2.2L engine.  Car has recently suffered from
an occasional high idle, above 1000 rpm and higher when the A/C
compressor kicks on.  Today it was idling normally and then started
idling high and the check engine light came on.

Any ideas before I go and have the code read?

Also, the gas cap was not fully tightened when I checked it this


Re: High Idle with Check Engine Light

Try starting it cold.  Is the warm up idle the same speed as the abnormal

I might suspect a bad thermometer (car thinks it's cold when it is warm
causing the "warm up" sequence to continue).

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