Imy Cherokee hasn't done this in a long time. It has been sitting outside in the snow for a couple months. Before it sat in the snow it never had any problems. Now I can't drive for 10 minutes before it starts jerking. When it starts to jerk I let off the gas then it tries to stall... Any ideas??

 

Check Engine light on? If so, reading the stored codes is the place to start. If not, I'd probably start with testing fuel pressure.

 

BTW, if it's been sitting, what condition is the battery in? How about the terminals and connections?