2009 rzr 170. A small push and release on the gas pedal the thing goes wide open for about 15 seconds then slowly comes back down to an idle backfiring the whole descent. i removed the throttle cable with needle from the carb it still did it when i pushed the gas pedal. i unplugged the 2 wires going into the gas pedal assembly and it did nothing just stayed at an idle. i jumped the 2 wires together and it goes full throttle and nothing else. i have no idea what to do next. any help would be appreciated.

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