Please can any one tell what would cause my 93Z28 LT1 to hesitate, miss and stall after a good run.
Starts fine , starts to hesitate and stall after reachng true op temp while city driving.
Runs done freeway excellently but after exit and few stop lights the problem arises.
New wires Ing module,coil,plugs, wires,fuel filter

 

Service light ON? Try some fuel injector cleaner, but I suspect a sensor problem or the Opti dying.

 

No warning or idiot lights. Opti sensor???? What is its function.