94 LT1 sputtering, bad opti?

[94vette]

I have a 94 LT1 coupe that seems to missfire at idle and sputters under acceleration. There are no codes present, and the fuel pressure is good. Could it be a bad opti? I have a k&n air filter which I cleaned and lightly oiled. I have a granatelli mass air flow which I lightly cleaned with a q-tip. There is no oil residue from the air filter in the air tube. I also have a bbk throttle body that I have cleaned out.
I have replaced the battery, alternator, spark plugs, plug wires, o2 sensors and fuel filter.

Anyone have an idea?

P.s. Also no heat with all new a/c heater controls, programmer, and heater control doors. Need the heat bad. East coast chill coming soon.

Thanks.

[JRMaroon]

That's what my '94 did when the opti went bad. That's just what they do unless you are one of the lucky ones.

Jeff

[redc4corvette]

Opti spark about $295.00 if you look around type in opti spark in the form and I think you will find alot of info on them.

Pace chevy has a good price ,their in Ohio.
Water pump will have to go also.
Touching the wires on any sensor is not good even with,a Q-tip
there are burn off sensors to clean those wires when they are dirty .
Just my o2

[grapeknutz]

You wont get a code if the secondary ( cap and rotor ) is bad.