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Thread: Massive misfire cylinder 1 -- SOLVED (wire corrosion)

  1. #51
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    Quote Originally Posted by Top_Fuel View Post
    Maybe it's just me...but the wiring in this car seems incredibly delicate compared to other cars I'm familiar with.
    Agreed. Seems to be a narrower gauge than other cars. I think the breadboard jumper wires for my Arduino are as thick.


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  3. #52
    Moderator Eggman's Avatar
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    Quote Originally Posted by Rkt Ship View Post
    Now onto the real problem. It was corroded wiring. Like really corroded. The wire had chaffed in the tab that holds the injector harness to the intake manifold.
    Quote Originally Posted by Rkt Ship View Post
    Another wire that had rubbed through on the plastic connector that mounts the harness to the manifold. This one had rubbed through completely when I opened up the harness it was in 2 pieces.
    Nice going - I has suspected something like this would be the culprit.

    Any pictures? It would be good to see what happened.

    Do you suppose this could be related to your engine swap?



    Quote Originally Posted by Top_Fuel View Post
    Maybe it's just me...but the wiring in this car seems incredibly delicate compared to other cars I'm familiar with.
    Sometimes, smaller is better - and I don't mean just saving weight. Smaller wires tend to flex better, depending on the application. So long as it is capable of delivering the power necessary at the other end without loss of power or risk of overheating. Depending on the insulation type, conductor material, number of strands and in communicating circuits number of twists per foot/meter...
    Last edited by Eggman; 12-21-2017 at 07:41 PM.
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  4. #53
    Senior Member Rkt Ship's Avatar
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    Quote Originally Posted by Eggman View Post
    Nice going - I has suspected something like this would be the culprit.

    Any pictures? It would be good to see what happened.

    Do you suppose this could be related to your engine swap?



    Sometimes, smaller is better - and I don't mean just saving weight. Smaller wires tend to flex better, depending on the application. So long as it is capable of delivering the power necessary at the other end without loss of power or risk of overheating. Depending on the insulation type, conductor material, number of strands and in communicating circuits number of twists per foot/meter...
    I didnt get any pics unfortunately
    It could have been from the swap. Although the mivec thing has been broken since 60k and I didnt do the swap until 125k. That wire was in 2 pieces.

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  6. #54
    Senior Member MightyMirageMpg's Avatar
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    Wow good job finding the problem yourself. Problems from corroded wires are usually the toughest to find

  7. #55
    Senior Member Rkt Ship's Avatar
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    Quote Originally Posted by MightyMirageMpg View Post
    Wow good job finding the problem yourself. Problems from corroded wires are usually the toughest to find
    I wouldnt have found it if it werent for the oscope. It would look fine then flatline. But if you werent in the right range it would look like it was working correctly. I just need to get better with an oscope and I would have found this a month ago.



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