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

94 C4 LT1 Stumbling Problem

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Old Jul 19, 2003 | 09:54 PM
  #1  
thode's Avatar
thode
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From: Humble TX
Default 94 C4 LT1 Stumbling Problem

I have a engine stumble when I place the car in 6th and apply the gas under load.... It is very upsetting... It happens when the car is driven at 55 + and I give it gas to accelarate.... The car stumbles, jerks, and makes a poping noise that shakes the whole car.... Ive replaced the wires and plugs....It only does this after the car has reached the 200 mark on the temp guage....Does anyone know what could be going bad or what is bad ?????
Ive been told that it maybe the coil breaking down.... But the car works fine a high RPM's ..... When the problem starts the car does the same jerking n all gears under load.... IE taking off.... Hitting the gas from a slow roll....

Please HELP ........

Thanxs

Shane Hill

1994 C4 LT1 300HP





[Modified by thode, 9:55 PM 7/19/2003]
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Old Jul 19, 2003 | 11:58 PM
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From: Joppa Md
Default Re: 94 C4 LT1 Stumbling Problem (thode)

I have the same symptoms with my automatic. It's the optispark. Check out my post. http://forums.corvetteforum.com/zerothread?id=607317
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Old Jul 20, 2003 | 12:10 AM
  #3  
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Default Re: 94 C4 LT1 Stumbling Problem (sumoboy)

I have the same symptoms with my automatic. It's the optispark. Check out my post. http://forums.corvetteforum.com/zerothread?id=607317
:withstupid:
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Old Jul 20, 2003 | 02:49 AM
  #4  
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Quiktrp94
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From: Chandler AZ
Default Re: 94 C4 LT1 Stumbling Problem (Lone Ranger)

Before you invest in an opti I would check the O2 sensors. I had a similar problem and it was the left O2 sensor. Just a thought. Good luck. :banghead: :cheers:
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Old Jul 20, 2003 | 08:06 AM
  #5  
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From: Joppa Md
Default Re: 94 C4 LT1 Stumbling Problem (thode)

How many miles on the Opti? I have 67k on mine and it's definetly it and time to replace it.


[Modified by sumoboy, 8:07 AM 7/20/2003]
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Old Jul 20, 2003 | 01:42 PM
  #6  
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92corvette
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From: DFW TX
Default Re: 94 C4 LT1 Stumbling Problem (thode)

It happens when the car is driven at 55 + and I give it gas to accelarate.... The car stumbles, jerks, and makes a poping noise that shakes the whole car.... But the car works fine a high RPM's ..... When the problem starts the car does the same jerking n all gears under load.... IE taking off.... Hitting the gas from a slow roll....
Exactly the way mine acted when the Opti went.
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