Question about 1989 Honda Prelude
1989 honda prelude. engine surges. from normal idle to 2100 rpms back and forth. what to do to correct problem. i have already changed out the idle air control valve.
There is a warm up valve on the throttle body(should have 2 small coolant hoses). remove the valve and have someone start the car while you block the port to the valve on the intake. If that clears up the problem you can cut a piece of cardboard to mount in between the valve and intake.should straighten it out.
Posted on Oct 01, 2009
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Posted on Jan 02, 2017
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