I have an 89 Pontiac Firebird Formula/5.0L My engine light has been on for a couple months and it struggles to start when engine is cold. Once car is started i experience major break up through acceleration and occasional backfire or more like a popping sound. the ENTIRE fuel system from injectors to filler neck was replaced a year ago so i think its ignition related. Any ideas? also once the car is at operating temp. the symptoms settle down a bit.
Mar 16, 2011 at 12:52 PM