Screaming Hi-Rev Start-up
Vehicle is a 2004 automatic coupe in beautiful shape with 32.000+ miles. Have performed all the common fixes (thanx to this forum) and the car has been running beautifully for the last two years. Last Saturday we went shopping and parked the car in open sun on an asphalt lot in 95F heat. Came back after approx. 45 minutes shopping. Turned the key and the engine started quickly but instantly climbed to 3,200 RPM. My feet were flat on the floor with no pedal contact. It was quite a roar due to my MagnaFlow exhaust. I turned the ignition off in a panic, waited around 30 seconds, and tried it again with the same result. One more attempt a minute later resulted in the same screaming over-rev. What on earth's going on? Decided to try it once more before calling a tow truck. On this fourth attempt everything was fine. The engine started instantly and idled fine. We drove home without incident. Started the engine a few times when we got home but everything was fine. Has anyone experienced this? Any comments would be greatly appreciated as my faith in the car's been shaken a bit.