hi all...mine car the same problem....the hold light keep blinking & sometimes it give me a big jerk while driving in low speed.....as like wat other member said, my car always being in idle mood however i change the gear from N to D...really headache & frustrated.....send to few foreman before but no one can solve my problem...they always say valve body & sensor matter...but yet cant solve it...could anyone give me an advice??

Hello ericmaxman, mine one is optra5 1.8....do you have any ideas??