Replacing IAC valve did not help, but unplugging it drops rpms to almost nothing so that car is drivable. Now auto tranny won't shift but I assume that's because of idle issue. What's causing such a high idle? High idle issue started after rinsing off motor with garden hose. Used stream and soft spray to rinse off motor. Left to dry for a few hours, then started engine and problems started. Thank you.
Sunday, April 29th, 2012 AT 9:14 PM