...will jerk forward a bit? My friend just got a durango. 2001. and he was saying that after the engine warms up, he will be stopped and it will all of a sudden idle higher, or the RPM's will go up and jerk the car. I don't know what its about, Just trying to help him out. Maybe the torque converter is kicking in? i don't know about the RPMs going up. He couldn't show me in his driveway. maybe because the engine wasn't warm. Any ideas? what to check? would we want to look at the throttle body?