I replaced the plugs yesterday with NGK plugs and the check engine light comes on and goes off with the ignition switch. I cleaned the MAF and the throttle body also, helped but not fixed. Can anybody please tell me how to adjust the timing? This is my first subie...Oh, and by the way today when I put the car in Park, it doesnt want to come out of park. Its done this a few times now..maybe inhibitor switch? Thats what ive been told but local parts store cant even get them...Any help is greatly appreciated..:confused