my sisters got a 99 jetta gl 2.0, and her speedo works never xcept like once or twice in the past like 7 months. im thinking it is the vss but i dont know where it is on the motor? what does it look like? also the car shifts harder/doesnt shift until like 5 grand u gotta take ur foot off the gas and let it shift. it says in the manual that the vss causes that any ideas??