Well as I got off the highway the other day I noticed my exhaust was a little louder. Now the Idle is all messed up. Its a 95 4dr Integra Ls. Also the Car stalls out. Its a Automatic. I can tell the car is running rich do to the smell of the exhaust. On shop says its either the Timing or a Internal problem. Another shop says a Sensor on the Tranny. NEED HELP FAST