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UPDATE on engine stumble

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Old Aug 13, 2001 | 03:37 PM
  #1  
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Eric94
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Default UPDATE on engine stumble

Hey guys,
Just a little update for you. For those who don't know, sometimes my 94 LT1 has a really rough idle, or stumble at startup. Several others on the forum have something similar too. My stumble was happening one or two times a week. Well, I started by replacing the ignition wires with the MSD ones. I also replaced the spark plugs, I was using the boush platinium +4's, and now I have new NGK TR6's. Well, a week went by with no stumble, but I have since had one. It didn't seem as bad though.
Next, I'm going to try replacing the oxygen sensors, since I have already bought them anyway. I'm going to try this a step at a time, and try and keep everyone updated. Maybe we can figure this thing out.
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Old Aug 13, 2001 | 05:27 PM
  #2  
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Default Re: UPDATE on engine stumble (Eric94)

Sounds like you have a good plan to get it worked out :yesnod: Have you thought about the OptiSpark? I heard someone on here mentioning about the same symptoms and that was the villain to their problem...I hope its not and since it has gotten less I don't think that would be the case of a bad OptiSpark... I have heard they only get worse :( Good Luck.. :seeya
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Old Aug 13, 2001 | 07:34 PM
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Default Re: UPDATE on engine stumble (Eric94)

That's an easy fix, its your IAC (idle air controller) it cost $30 and is very easy to install. That solved my problem.
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