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

Engine Missing in load situations......

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Old Apr 15, 2003 | 02:36 PM
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thode
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From: Humble TX
Default Engine Missing in load situations......

My car seems to mis and jerk around when I place the car in 6th gear going less than 60mph and give her some gas. I have notice this is getting worse and starting to affect other gear selections when I place the car under a load... Some time even when Im starting from a stop the car will studder until about 2500 rpms or so. What could be the problem.... Happens a lot worse after car has been driven over an hour or so in warm to hot weather. Never seems to do anything while it is cold motor and climate. Does anyone have any ideas ??? Coil ?? Opti-Spark ?? Bad Wires ??

Any help would be great !!!!!!!

Thank You :grouphug:
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Old Apr 15, 2003 | 03:37 PM
  #2  
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konroh
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From: Fraser MI
Default Re: Engine Missing in load situations...... (thode)

I have been fighting a similar problem. It seems better now that i have replaced the opti, coil, wires, plugs...but it still occasionally acts up. I need to take it to an exhaust shop to check the cats...not sure what else to look at. Hooking it up to a laptop shows reasonable values for everything...but these cars are complicated, so it could be almost anything...
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Old Apr 15, 2003 | 04:10 PM
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John Row
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From: San Diego CA
Default Re: Engine Missing in load situations...... (thode)

Sounds like an Optispark problem to me.

Other misses don't tend to be temperature related. A long shot would be the ignition module, but in this case I'd put money on the opti.

Feel under the water pump (when cool) for the weep hole (where the shaft comes out). See if there is any coolant dripping. That would be clue #2.
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