Question about 1996 Chevrolet Corvette

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OPTISPARK RELIABILITY I have heard that the Optispark used on this engine is no reliable, is this the case or just a car rumor? What goes wrong? how will I know it has a problem? a miss, no start, what??

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  • yadayada
    yadayada Sep 10, 2008

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It is reliable.what happens usually is the water pump goes bad and moisture gets in the module causing it to fail which is why it is recommended most times to replace both at same time. other than that no real issues

Posted on Sep 10, 2008


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Replacing the Optispark Distributor is a real pain in this year and the LT1 engine.
Here are the steps
Remove accessory drive belt
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Remove Radiator fans (unplug wiring harness first)
Drain the cooling system
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I think my optispark is going out but not for sure. The car will start up but will not allow WOT it will cut out or die then is hard to start back. The service engine light will stay on until it sets for...

That rotten egg smell is unburnt fuel in the exhaust. I am no expert in ignition systems but i have heard that optispark systems aren't very hardy. Try replacing the coils, wires, and plugs. If that doesn't work its time for a new distributor.

Feb 28, 2011 | Pontiac Firebird Cars & Trucks

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My 1992 corvette will not idle above .5 rpm wants to die.

Sounds to me you should do some checking and diagnosis first. Start with simple stuff like checking the spark plugs to see if they are fouled or if you have a damaged plug wire or even a loose or unhooked plug wire or plug. Then check all your vacuum hoses to see if there are any that are damaged, dry rotted or not functioning. Then check O2 sensors, idle control valves etc...

Finally if you've checked all that, then I'd opt for a new optispark (the term used for the distributor on these engines), and that's quite a labor intensive job.... and a new optispark is rather expensive at around 300-500 US dollars.

Good luck.

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Car stops while driving

Your car has a bad optispark. You'll need to replace the unit. My 93 did the exact samer thing. It ran like a champ when it was cold, but the second it warmed up it died. THe one thing you can try is to let it just run, this will build up heat in the optispark unit and help to dry up the moisture that has built up inside it. It may help for the short term, however the problem is that by the time this actually starts happening the unit is already finished. THe other thing I noticed with mine was it was especially bad after a rain fall.....Hope this helps.

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optispark distributor fails. go to and search optispark. it'll pop right up

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