1991 Acura Legend Q&A

1991 Acura Legend Question: reving up and down?

thanks you answering my question.now i would like to know do i need to replace the cold idle valve right away?will it damage my car at all? -
Answer 1
No, it shouldn't. but it may cause surging when you are driving in a parking garage or something so be careful. -
Comment 1
I have the same problem, finally ordered an IACV. I go 35-40 mph without putting my foot on the gas! -
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my car revs up and down when in park but it only does it sometimes,what could it be and how much do you think it would cost to switch it?