2002 Jeep Grand Cherokee backfires through the throttle body

2002 JEEP GRAND CHEROKEE
4.0L • 6 CYL • 4WD • AUTOMATIC
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LCHAPM1
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I am at a loss with this car.... it started idling high at start up, changed the TPS ran fine for a week, started having trouble starting, then it started stalling going down the road, then it started backfiring through the throttle body. It starts up after multiple tries and idles rough when I put it in gear it starts to backfire and will not move.
Sep 8, 2014 at 2:02 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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