Chevrolet Repair: Lack of power below 50 mph, 2000 chevy prizm, chevron techron

Question
hi, i have a 2000 chevy prizm with 160k miles, it is sluggish below 50 mph and likes to return to idle, o2 sensor, sparks, and maf have been replaced to no avail, any suggestions?

Answer
Possible problem could be several things. Make sure air filter is not clogged, check fuel pressure, make sure gas filter is not clogged. It's possible that the timing belt has jumped...has it been replaced at the proper interval, see owners manual. Injectors could be partially clogged. Try using some fuel injector cleaner like Chevron Techron Plus...recommended every 3000 miles in gm vehicles. Last it's possible that the catalytic convertor could be restricted...not likely thou.