C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

optispark - check engine light???

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Old Jan 16, 2008 | 01:58 PM
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Default optispark - check engine light???

Guys
anyone have this problem - changed out the opti on my 1993 and it runs absolutely great....then the Check engine light comes on with code 36....but it runs better than ever! I clear the codes but the light comes back on! Any suggestions?
Thanks
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Old Jan 16, 2008 | 02:03 PM
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Check the opti wire harness to make sure it has a good connection.
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Old Jan 16, 2008 | 02:08 PM
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Might want to get the factory service manual out and troubleshoot the code. It should tell you where the problem is.
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Old Jan 16, 2008 | 02:59 PM
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Hi
when you say
"Check the opti wire harness to make sure it has a good connection."
what exactly is included in that??
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Old Jan 16, 2008 | 03:05 PM
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Make sure the wires are not damaged, no bent pins on wires and opti, no corrosion, ect.
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Old Jan 16, 2008 | 03:06 PM
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Thanks
is that just the wire connectors from the top of the opti?
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Old Jan 16, 2008 | 03:08 PM
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Yes, check the connection to the opti. Also, check the connection to the engine wire harness.
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Old Jan 16, 2008 | 07:31 PM
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well looks like I got lucky and ended-up with a BAD OPTI - it runs a bit then just quits, starts righ up and runs for a while then just stops...
well at least replacing it again should not take as long.....
thanks for the suggestions
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