1987 Acura Legend Does Engine Rev Down On Manual Transmission 87

1987 ACURA LEGEND
181,000 MILES
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Why does my engine rev up and down on a manual transmission on a 87 Acura legend
Oct 25, 2012 at 3:32 PM
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KHLOW2008
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If the idling speed is too high, idle would surge. Lack of coolant or clogged coolant hoses to the cold start and IAC can cause this too. Vacuum leaks, bad cold start valve are other possibilities.
Oct 25, 2012 at 3:50 PM
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