LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Weird Misfire only when cold

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Old 03-18-2008, 04:10 PM
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Default Weird Misfire only when cold

Okay my car has been running fine...just went through a big snow storm with almost 2 feet of snow without a hitch. Well it's been raining all day today and I went to go to class and drove out of the parking lot while sitting at the traffic light my car started shaking and I could tell it was having a misfire. It would start missing pretty bad whenever you would put the motor under any kind of load. But as I got to campus it got hot enough where the temperature started reading on my gauge. Then I noticed my misfire went away. Couldn't really put it under any kind of real load since there was a lot of traffic and the speed limit is 25 on campus but when it got warm it stopped. Do you think this is a one time thing? Almost seems like the opti got soaked from the rain and it had to get hot to dry off
Old 03-18-2008, 07:33 PM
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bump...
Old 03-19-2008, 01:38 AM
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i got the same problem not sure what it is yet, bump for ya.
Old 03-19-2008, 01:40 AM
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maybe thats what it was just needed to burn off the condensation.

your opti just needed to do this:

lol
Old 03-19-2008, 12:03 PM
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trying to find that optispark picture that says "60% of the time, it works... everytime" lolol.

thats what came to my mind
Old 03-19-2008, 12:31 PM
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that used to be my sig lol
Old 03-19-2008, 02:09 PM
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i have the same problem after my car sat for the winter it would be very shaky and sputter when i tried givving it a little bit of throttle but once i get to the end of my street its fine and when it pulls that **** in parking lots after its been sitting cold i just let it warm up n its ok i figured it was a fouled plug but im almost positive its the opti so I have ordered the MSD opti for it and just awaiting a day when I dont work 2 install it I will let you know after that if it stops
Old 03-19-2008, 03:25 PM
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well my opti was replaced 30,000 miles ago i hope i dont need a new one



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