I am hoping this is the problem!
I have been searching for my problem, and I think this is it. My daughter has complained that the car has seemed to be driving fine, and then all of a sudden jerk and then her tac drops to zero, and the car then continues to run, and when she stops and restarts the car the tac and the car work fine. In the past 3 days the car has suddenly stalled in the middle of driving twice...no warning...and the the brake and power steering are lost and is difficult to pull over. There hadn't been any signs of sputtering, and she is young so she has not noticed if the shifting is delayed. I will check that tomorrow when we go off to get the code read...currently the Check Engine light is on; it has not been on prior to this. So hopefully it stays on. At this time too, I will have them look at the battery terminals. She lets the gas run low, so I guess it could be a problem with the filter; it was suggested that the fuel pump relay could be bad, but that was before I found out about the tac. The ignition switch or relay was also a suggestion. What was the code for the crank sensor? I saw it in someone'* post. Anything else I should be thinking about.