1993 Chevy Cheyenne throttle body back fire

1993 CHEVROLET CHEYENNE
119 MILES • 6 CYL • 2WD • AUTOMATIC
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LIGHTNINGGRAPHIXANDSIGNS
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When we press the gas pedal down from a dead stop. The thottle body back fires & it bogs down. We put a new choke sensor, tps sensor, cap & rotor, plugs, wires, fuel filter and cat. on and it still does it. Could this be timing or fuel injectors?
Sep 8, 2008 at 2:12 PM
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KEVIN12881
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  • 336 POSTS
hear are the most common causes. 1. EGR system not functioning properly. 2. timing. 3. Vacume leak. 4. damaged valve springs or sticking valves 5. intake air (vacume) leak
Sep 8, 2008 at 2:21 PM
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