Idle speed goes from 1000 to 1250 rpm every second. Was a near constant problem then Dealer cleaned throttle plate and adjusted idle speed. Then was sporadic. Now Dealer put in new thermostat and it still does it. I drive alot for my job and some days it does it all day. I've seen this problem in the forum but without an answer. I don't want to go back to Dealer he's talking head gasket now. Please help.
Apr 29, 2008 at 6:49 PM