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

1994 Hesitation

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Old Sep 8, 2011 | 10:48 AM
  #1  
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Motex
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Default 1994 Hesitation

I have a 94 that intermitenly at 70 mph has what feels like a miss. Put the cruise on an it goes away. Just does it every once in a while. Any suggestions?
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Old Sep 8, 2011 | 03:46 PM
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Replace plugs and cables? Just kind of a basic tune. Tends to take care of small hiccups like that.
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Old Sep 8, 2011 | 04:06 PM
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Check the hot coil wire for any sparking to ground near pump.

Does it do it when it gets hot?

My 94 did and under acceleration (hot) at those speeds it turned out to be the opti. If I did not accelerate like if cruise is on, it was OK.
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Old Sep 9, 2011 | 12:02 AM
  #4  
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Default Mine was coolant on the opti

Check to see if any coolant is dripping out of the water pump weep hole onto the opti. Kind of a pain, but run your fingers around the bottom of the water pump until you feel the little weep hole, then check to see if your finger got wet.

I ended up replacing opti and water pump.

Last edited by whitenow; Sep 9, 2011 at 11:57 AM.
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Old Sep 9, 2011 | 07:53 AM
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Sounds like the same symptoms I had on my 94. Slowly got worse. Opti fixed it.
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Old Sep 9, 2011 | 12:24 PM
  #6  
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please read post http://forums.corvetteforum.com/c4-t...ou-fix-it.html this might help u
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