OK as said it's an 03, the speedometer will sometimes freakout and while in park it will start jumping around between 20 and 30 mph. While in my driveway I was shifting if from drive to reverse to see if the speedo jumping around would stop, when I put in park the car shut off ??? I started it again and the speedo was fine, no more jumping. It happenes every so often but not all the time.

It has also started dying when I come to a stop after normal driving. Kind of just stumbles then cuts off. It starts right up and drives fine after that. Hmm, here is some specs:

3.0L
94,000 miles
Auto

Any possibility it might be a bad ECM, our sensor for the Speedo? The tach does not jump around. I'm also thinking it may need a fuel injector and top end cleaning with the miles on it. I bought this at 91000 for my daughter, any expert suggestions will be lvery helpful. Thanks gang...