Have a 1998 Ford Excort ZX2 2.0L My serpentine belt just recently shreaded because my mechanic put an a/c delete kit on it and did not have the delete kit pulley lined up correctly. The pieces wrapped around the alternator and water pump pulleys as well as the timing belt/gears. The new mechanic replaced the timing belt and reset the timing and replaced the serpentine belt and made an adjustment to the delete kit to allow it to align properly. Now my car is running very rough. I'm getting alot of vibration from the engine. I can feel the car "****" when I start it and you can feel the vibration when you have your hands on the wheel without moving. I've noticed it seems to "miss" or hesitate while driving and when I go to stop at a stop sign it gets "jittery" The car did not run like that before. When I first drove it away from the mechanics shop within a mile the orange "Service Engine Soon Light" came on. They came and checked it and said it was a vapor leak code and just unscrewed the gas cap and put it back on and said it was fine. I mentioned to them how rough it was running. They said it was fine and that if a car jumps time it will run rough. They suggested new plugs and wires even though I have had them replaced withing the last 2 years. The car just turned 200k miles and has never...ran this rough except just before the timing belt broke about 5 years ago. What should I have them do. I don't feel safe driving the car this way and I am very concerned that unless it is fixed properly, it will cause damage that was not previously there. Please help.