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antlip
04-20-2007, 08:48 PM
We have a 91 pontiac firebird with a 3.1 v6 auto. The car idles bad when in gear and at a stop. It will idle rough from 700 to like 850 rpms and bounce back and forth non stop soudning really rough. We replaced the rotor, distributor, wires, spark plugs, starter, ECU and checked the timing. We put in a can of fuel injector cleaner to see if one injector was dirty and not gibing it enough fuel at idle causing it to get rough but that isnt helping. Any ideas on what it could be or what to check out next?

antlip
04-20-2007, 08:56 PM
Oh 110,000 miles.