My 91 Bronco recently started running rough. When I started the engine, I had a "Check Engine" light. The engine rpm went to 2000 rpm, sputtered several times and then shut down. Easy restart. The check engine light did not come back after restart. I did a manual check for codes but could not pull any. While taking it to a garage it ran fine for about 30 miles. I Parked it overnight and started it the next day. Same problem. I took it for a drive and at times, while driving it will act like it had an engine miss and drove like a bucking bronco. shut down several times at traffic lights. It always restarted ok. Help!
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