1996 ford contour, started it this morning, turned it around to back into my parking spot, let the car warm up for about 15 minutes, got in, couldn't get it out of park, turn the car off, and now it wont start again. jumped it, it started, let it run for a little while, started to drive it, started chugging and then died, now it won't start again.

One thing to look at is the large black plastic "bellows" that comes from the intake plemun towards the air filter. It is common for these to get brittle and crack over time, especially in cold weather. The crack may be closed when the car is in neutral, but when you put it in gear, the engine moves a little and the crack opens up and creates a vacuum leak. Look it over real good and if you find a crack, some duct tape will provide a temporary solution. I hope this helps.