My car shuts off in the middle of driving sometimes, I've been told it could be my serp belt, a tune up, fixed an exhaust leak, valve cover gasket and oxygen sensor. I replaced all of them and the problem stopped temporarily. I noticed that the jeeps computer is held together with a large bunjee cord and found that if it moves even a little the car stops! What years are comparable with my '97 jeep grand cherokee (6 cyl). I'm thinking this is going to fix my problems