1996 Plymouth Breeze rough idle

The computer of the car claims that the timing belt is a tooth off but I checked it and everything is fine. All the timing marks match. When the car is idleing it sounds as if the car has a misfire, but when it is accelerated it sounds fine no miss fire or rough acceleration just a rough idle. When the car is running and you come to a stop it dies, and it starts right up again with a rough idle. I have put new spark plugs, timing belt, cam and crankshaft position censor, all to try to get rid of the problem. I checked the compresion and all the cylinders have a 175 psi compresion.