1991 pontiac firebird help - TriStateTuners.com :: Home of Tristate Auto Enthusiast

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.

04-20-2007, 08:48 PM	#1
antlip Tri-State Aficionado Join Date: Jan 2006 Location: jersey Member #1298 My Ride: 70 Chevelle iTrader: (0)	1991 pontiac firebird help 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? __________________ 1970 chevelle 350 weekend car. 3 years of work. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

04-20-2007, 08:56 PM	#2
antlip Tri-State Aficionado Join Date: Jan 2006 Location: jersey Member #1298 My Ride: 70 Chevelle iTrader: (0)	Oh 110,000 miles. __________________ 1970 chevelle 350 weekend car. 3 years of work. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.