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Thread: 1995 MM Automatic Transmission Computer Module

  1. #1

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    1995 Mitsubishi Mighty Max
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    4G64

    Cool 1995 MM Automatic Transmission Computer Module

    As the title says lol I have a 1995 Mighty max with an Automatic Transmission and I have took the module out underneath the dash mounted on the firewall and ran the numbers and came back being what I thought it was. I also just opened the case of it find out it was burnt places on the circuit board so I tried everything I could to fix the overdrive and shifting problems and nothing worked so I am leaning towards the computer module that controls the trans. I could shift it manually on the column but I still didn't have overdrive so high RPMs when traveling down the road. I have had hard time trying to find one and so called new or used ones on certain sites the computer modules are way too expensive! So I am on a very tight budget I just had my engine rebuilt so I want my trans to work properly and not mess up the newly rebuilt engine. The numbers on the computer module are in the pictures and what it looks like. Thanks!!

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  2. #2

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    1990 Mitsubishi Mighty Max
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    6G72
    I would recommend Foreign Auto Computer in Zephyrhills, FL for a rebuild, less than $200 and it will be done right.
    1990 MM 4x4 3.0
    1991 MM 4x4 3.0 Diamonte
    1994 MM 2wd (work in progress)

  3. #3



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    1980 Dodge D-50
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    G54B
    the trannies in these trucks are not computer controlled - the issue is the temp sensor on the intake manifold next to the throttle body. Take the black wire connected to the sensor and connect it to a ground lug on the intake maniford and the O/D should work all the time unless you push the button on the stick to lock out O/D. The temp sensor grounds the O/D solenoid when the truck is at operating temp for emissions reasons.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  4. #4

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    1995 Mitsubishi Mighty Max
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    Thanks for the information and I found one in the junkyard off a 92 MM same identical trans and numbers on the module and now I have overdrive yay! Sorry Pennyman1 I did the wire thing and nothing happened till I replaced the module but thanks for the help anyways The Trans is a R4AC1 4 Speed Overdrive Auto and Engine 4G64 2.4L. I always enjoy the help and the site it's awesome!

  5. #5



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    well I learned something today too - never had a 1995 truck - thought the trannies were all the same.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  6. #6

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    4G64
    Yea it's cool man and I am still learning too! lol

  7. #7

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    1984 Mitsubishi Mighty Max
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    just FYI all the A500 trans are computer controlled, 91 and on A500. Currently having issues with my overdrive in my 91, 2.4 liter. Found a blown cap in the trans computer, replaced it but the overdrive only works after 30-40 minutes of driving

    sensor is already grounded so lets not go there pennyman i see you post about that sensor in every thread on this forum. I'm gonna look for a used computer and see if that fixes things.

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