C 4 idel problem, Help!


Asked by Sep 21, 2016 at 04:42 PM about the 1990 Chevrolet Corvette Convertible

Question type: Maintenance & Repair

90 Corette, after having ECM replaced idle drops to 500 rpm then revs back
up to normal 1,200 rpm. Will idle fine then drop to 500 again often dying.
better with ac on but still does the same. Also had engine vacuum leak
Any ideas as to the solution, 4 mechanics have had car and still not
I live in Indianapolis if you know some one in the area that is good.

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