I have a 95 dodge dakota with a 3.9l v6 5-speed manual.check engine light came on today. At first I didn't notice anything but after a few short trips with the check engine light on I noticed that once I would let off the trottle the truck would coast in gear for about 2 seconds then it would feel like something would catch in the drivetrain similar to if I lightly tapped the brakes. The truck will coast in neutral fine but after letting out of the throttle in every gear I would feel this "catching". Underneath the truck there is about a 1"x2" dent (no holes) in the exhaust down tube about 1-1/2 feet before the two sides join into the single exhaust pipe. This is before the catalytic converter. Could this be causing it? Any other explanations? Thanks Brian