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

High speed miss...???

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Old Nov 18, 2004 | 10:43 PM
  #1  
Z06_BluByU's Avatar
Z06_BluByU
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From: stop the fun suckers
Default High speed miss...???

I'm getting a high speed miss on acceleration 4500-5800+

I had a problem where the engine wouldbreak up after being in stop and go traffic for about 20 min. I replaced the plug wires and the coil wire and still had the problem.. I checked fuel pressure according to the helms manual and all was ok.. I tested the injectors and all read within 1 ohm of each other.. Fuel filter is less than 5k miles old.. I thought it was the opti-crap.. and I took that off and saw the bearing was shot.. so I replaced the opti-spark with a new sealed unit GM part right from the dealer.. I also changed the water pump while i was in there.. went for a ride and it felt great.. then I hit it and it rev'ed up fast but broke up around 5200 rpm in first gear.. i left of the gas it switched to second and I hit it again and around 4200 or so it began to have a slight miss.. the miss stated there all the way up until I got off of it..

I also noticed the rear speaker in the car is making a funny static type sound that is loud and stays consistant volume no matter what the volume of the radio is..although the volume of the song changes,,,

wife is not happy with me.. please help!
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Old Nov 19, 2004 | 10:04 AM
  #2  
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MR.KIDD
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From: NORFOLK VA.
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Originally Posted by 383_BluByU
I'm getting a high speed miss on acceleration 4500-5800+

I had a problem where the engine wouldbreak up after being in stop and go traffic for about 20 min. I replaced the plug wires and the coil wire and still had the problem.. I checked fuel pressure according to the helms manual and all was ok.. I tested the injectors and all read within 1 ohm of each other.. Fuel filter is less than 5k miles old.. I thought it was the opti-crap.. and I took that off and saw the bearing was shot.. so I replaced the opti-spark with a new sealed unit GM part right from the dealer.. I also changed the water pump while i was in there.. went for a ride and it felt great.. then I hit it and it rev'ed up fast but broke up around 5200 rpm in first gear.. i left of the gas it switched to second and I hit it again and around 4200 or so it began to have a slight miss.. the miss stated there all the way up until I got off of it..

I also noticed the rear speaker in the car is making a funny static type sound that is loud and stays consistant volume no matter what the volume of the radio is..although the volume of the song changes,,,

wife is not happy with me.. please help!
What igniton system are you using?
Are you using a msd coil? I have had buddies with that same problem
and it turned out that the coil wasn't putting out like it should.
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Old Nov 19, 2004 | 11:47 AM
  #3  
Z06_BluByU's Avatar
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From: stop the fun suckers
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I'm using the stock opti-crap distributor and the stock coil and driver..
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