1990 Acura Legend Q&A

1990 Acura Legend Question: MY CAR IS IDLING UP AND DOWN

MY CAR WILL RUN, BUT IT'S KEEPS ON IDLE UP AND DOWN I DON'T KNOW WHAT CAN CAUSE THE PROBLEM CAN YOU HELP ME WITH IT. -
Answer 1
Sounds like there is a vacuum leak somewhere at the intake manifold. Check all the vacuum hoses, make sure they are not disconnected or broken. Zee -
Answer 2
As Zee said vacuum leaks are most likely the cause but low coolant level or bad coolant temperature switch also causes this surging idle. -
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