I have a 2002 zx3 5sp. This mornin i started her up, instantky jump to 3500rpm n stayed there for approx. 30secs before settling at 1050rpm n then to 950rpm. On my way to work everytime i change gears, the car would stay at the high revs then come back down...coasting to a stop light produces the same results. 1 block from my office, i ran first to 4000rpm n the car stayed at that rev for 35 secs before settling down again...wat da hell is going on?