An internal distributor fault could cause the Check Engine Light to illuminate, an engine misfire, or a stalling condition. Replacement of the distributor is commonly recommend to correct this concern.Google+
Car Problem Reports
Pontiac Firebird Internal Faults in Distributor Can Cause Engine Problems
Pontiac Firebird Problem
Engine Affected: 5.7L V8
Average Mileage: 100,800 mi (82,400 mi - 135,000 mi)
Visitor, 1994 Pontiac Firebird, 5.7L V8, 135,000 mi
Had to replace distributer because of stalling problems.
Visitor, 1993 Pontiac Firebird, 5.7L V8, 85,000 mi
Opti spark failure. Had to replace distributor
Visitor, 1993 Pontiac Firebird, 5.7L V8, 82,400 mi
optispark went bad had to replace it. First problem ever.