My wife just returned from a fairly long trip last night, and the car was running fine. This morning, on startup the engine raced for about five seconds, then began revving up and down. The motor rocks a bit on each surge. When I put the car in drive or reverse, the surging seems to stop while at idle, but once I start driving it returns. I tried the 'key dance', but all I get is 'done', no other codes, no flashing lights.
Unfortunently, my regular mechanic just took his kids to Disney World for the rest of the week, so, any ideas?
Thanks in advance.