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

Weird hesitation Problem

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Old Nov 9, 2009 | 01:03 PM
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Default Weird hesitation Problem

92 corvette 6sp with 82000 on the clock.

Problem is that when im in a high gear and i step on it it sputters like its misfireing, if i let off of it or accelerate slowly its fine, also if i shift a little later it seems to be ok.

Another weird thing is every now and then ( nothing related to the hessitation) on my dash where it would normally display fuel information or engine temps, i get a flashing 5ys light any ideas on that?
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Old Nov 9, 2009 | 04:56 PM
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come on noone not even with an "your opti's diein" comment
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Old Nov 9, 2009 | 05:00 PM
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Originally Posted by davidarnesen
come on noone not even with an "your opti's diein" comment
Does the engine light come on.Check for codes.Could be a ICM
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Old Nov 9, 2009 | 05:34 PM
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no codes at all and no ses light
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Old Nov 9, 2009 | 05:45 PM
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You can take off the ICM and have it tested at like napa or autozone.
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Old Nov 9, 2009 | 06:33 PM
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ill give that a shot any other ideas?
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Old Nov 9, 2009 | 07:12 PM
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Just replace the ICM and Coil. They go bad, may test ok at autozone but when hot they start to not work so well.

When I replaced mine for the second time in less than a year I took some washers and made an air gap between the head and the ICM/Coil mounting plate. My current setup has been on there about a year and its starting to go bad again.

If it was the opti you would get a code, ICM and coil do NOT throw a code on a 92.
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Old Nov 16, 2009 | 01:51 PM
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Just wanted to follow up with you all,

Ended up throwin a 35dollar msd coil in it and that fixed the problem
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And the winner is.....post # 7 (jaa).

The real winner is the Form user.
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Old Nov 16, 2009 | 06:15 PM
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hahah yeah you win a used oem coil
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