chevyuser74
1/2 ton status
truck is a 350 tbi, problem is it backfires through the exhaust on acceleration starts at about 2200 ends around 3000 after 3g it doesnt have the power i think it should, now it doesnt do any of this with the throttle position sensor unplugged(sensor is fine replaced same thing tested with a multimeter operation is smooth) . now what does that all effect, i know it effects fuel but what else?
