1990 Chevy Cheyenne

1990 CHEVROLET CHEYENNE
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BFREEMYER
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Engine Performance problem
1990 Chevy Cheyenne V8 Two Wheel Drive Automatic

My truck has started running rough, the fuel mileage has decreased a little, transmission shift points are not the same, it occassionally will stall while under acceleration and start again without me doing anything. I think either the throttle position sensor is bad or the MAP sensor, not sure which to try first though.
Apr 27, 2010 at 4:35 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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