crank position sensor...car will quit while moving, in gear and tires rolling...If car quits at stop or before or after accel or decel then it is fuel related.....Other place to check before CPS....Fuel filter...if you use 87 octane, in the winter, the amount of water that can gather at the bottom of your gas tank after sitting is unbelievable.
1. try some heat gas treatment(at least 2 bottles for full tank)
2. Fuel filter (change it, drivers side right next to unibody frame rail)
3. Main Ground on car and Negative and Positive terminals on battery.
(if you have corrosion on battery or if you see green on copper wire going to car body or steel bolt then there is your problem)
In the winter with the salt and water...corrosion is amplified by electricity...
Potholes can jar a bad connection and cause a drop in voltage, dimming of the interior lights when turn signal is on, or brake is applied, etc...
If it still dies then you need Crank position sensor replaced. Without knowing history of car and not having the normal visual cues....difficullt to diagnose, but most of the time if it is rolling or she is driving down the road and all of a sudden engine shuts down it is cps...
