Quote:
Originally posted by indigowhale
My mechanic says that the 86 and later cars have the idle mapped 200 rpms higher than my 84. Since my 84 is idling too low (750-800), I thought about installing an 86 stock chip that I have laying around.
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800 rpm is correct for an 84. The later cars idle at 880 rpm. You can adjust the idle speed by turning the 7mm nut on the throttle body. It will be covered by a yellow plastic cap, if an adjustment had never been made before. Check the archives for the steps to correctly do this. Make sure you're using an accurate tach/dwell meter and not the tachometer to measure idle rpms.