2000 Chevrolet S-10

Engine Performance problem
2000 Chevy S-10 6 cyl Four Wheel Drive Automatic 84000 miles

When I drive my S-10 sometimes on the interstate it will chug, and if I am at a stop sign or at a light and slowed or stopped, it will quit. I am able to restart it, but it will continue to do this. I had it checked out at a car shop and they changed the TPS sensor and the Air Conditioner relay vent (something like that). The garage said I had good fuel pressure, so that would eliminate a fuel pump or filter, right? Could it be that I have some particle or debris in my gas tank? The truck is about 800 miles overdue for an oil change, could that be the problem?
October 8, 2008.

Check out the related content below while we wait for the question to be answered by a professional mechanic.