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Go Back   Corvette Action Center > 1984 - 1996 Corvettes > C4 Technical and Performance


C4 Technical and Performance For technical and performance related discussion of 1984 - 1996 Corvettes.

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Old 10-18-04, 05:49 PM   #1 (permalink)
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94vette is offline
 
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My Corvette(s):
1994 Torch Red Coupe
Default 94 LT1 sputtering, bad opti?

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.

Last edited by 94vette; 10-18-04 at 05:53 PM. Reason: addition
 
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Old 10-18-04, 06:09 PM   #2 (permalink)
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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
 
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Old 10-18-04, 07:15 PM   #3 (permalink)
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1994 Red vert 1986 Blue Silver vette coupe
Default

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
 
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Old 10-18-04, 07:30 PM   #4 (permalink)
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92 coupe quasar blue
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You wont get a code if the secondary ( cap and rotor ) is bad.
 
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