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Automatic transmission lost 2nd gear

Discussion in 'Mitsubishi Minicab' started by Emerald, Apr 8, 2024.

  1. Emerald

    Emerald New Member

    It seems my Mitsubishi min truck has lost 2nd gear. I was driving around on the weekend, did some mudding, pressured washed it down and it seems I lost second gear after that. It will only go from 1st to 3rd. I also believe I only have a 3 speed transmission, I have only had three gears since owning it. Has anyone ever experienced this before? The truck is a 1992 Mitsubishi MiniCab U42T 3G83
  2. Emerald

    Emerald New Member

    So it looks like 2nd still exists kind of. I was checking the wiring by the transmission. If I disconnect the wire in the picture, then the transmission will go from 1st to second, but not third. If I reconnect it, I get 1st to 3rd. It must be a wiring issue, it happened right after pressure washing it after a little off roading.

    I am at a bit of a loss. I checked my grounding, the transmission is grounded. I did notice the white wire coming off the transmission is grounded out when not connected. That does not seem right to me but I know nothing about transmission.

    Anyone got any ideas


    Attached Files:

    Last edited: Apr 8, 2024
  3. MikeD

    MikeD Member

    That's a tough one, I have no experience with this but based on your testing it sounds electrical for sure and nothing mechanical within the transmission has failed.

    I have the van body so my setup is different but I did find some delicate thin old wires around the topside of the transmission. Something must have gotten wet/ wiggled / broken when you where wheelin' and washin
  4. MrJPolito

    MrJPolito Active Member

    That looks like a transmission solenoid. It's possible that water got inside of a wire harness somewhere and you need to dry it out. It might be stuck open or closed. Try spraying some electric parts cleaner into the wire harnesses coming off the transmission, which will evaporate any water.

    On my previous Hijet, it was possible to read error codes on the transmission computer by bridging a few terminals on a diagnostic port under the dash and watching a dash light blink the code, but I'm not sure how that might work on your model. In my case, both solenoids inside of the transmission were bad AND I needed to replace the wiring from the solenoid to the computer, and the truck was stuck in third until I did that. But power washing and water sounds like the suspect in your case.

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