1999 Mitsubishi Eclipse 99 Eclipse stalls while driving, re

Electrical problem
1999 Mitsubishi Eclipse 4 cyl Front Wheel Drive Automatic 160k miles

I have a 99 Eclipse GS non-turbo auto. It will stall @ idle or while driving. A/c on or off. It immediately restarts. The check engine light will flicker briefly but doesn't store any codes. It will stall when I am on the freeway at 70 mph. I have to shift it to neutral but it restarts right away. My mechanic has replaced the cam positioning sensor. I had it tuned up as well with a fuel injection service. Does the same thing. Also it jerks strongly and the engine seems too move when shifting from park to drive or reverse. I have changed out all of the mounts twice in the past 2 years and am still having this jerking problem. Please help I am lost on this.