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Thread: Just got an 89' Mitsubishi Mighty Max in CA

  1. #1

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    07-23-2012
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    California
    Vehicle

    1989 Mitsubishi Mighty Max
    Engine

    I.D.K.?

    Just got an 89' Mitsubishi Mighty Max in CA

    Its the 2.6L model. It only has 40,000 original miles and I got it for $2000. Its probably going to need new tires soon because it was sitting for a while and the tires are old. I think it has some sort of vacuum leak at the brake booster because it bogs as you press the brakes and sometimes stalls when coming to a stop.

  2. #2


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    08-31-2011
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    Calgary, Alberta, Canada
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    1981 Dodge D-50
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    Ford V8
    If it sat for a long time the diaphram in the booster might have cracked. easy enough fix. you can get one from www.rockauto.com for around $90

    And welcome to the site

  3. #3

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    03-26-2011
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    Location

    Portland, OR
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    1986 Dodge Power Ram 50
    Engine

    G54B
    40k miles? WOW! Damn good score.

    If it's been sitting for a long time, make sure no mice made nests out of your wiring, too. Or bees nests in the ducts, etc, etc.

    Welcome aboard!

  4. #4

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    04-06-2011
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    Jacksonville, FL
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    1990 Mitsubishi Mighty Max
    Engine

    G54B-T
    pics!!!

  5. #5

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    07-23-2012
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    Location

    California
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    1989 Mitsubishi Mighty Max
    Engine

    I.D.K.?
    The haynes manual says not to take apart the brake booster because it requires extra tools. How do I actually replace the booster diaphragm. I remove the booster and take it apart? Also, does carb cleaner hurt the rubber hoses and stuff so I can search for a vacuum leak? I will try to get pics soon.

  6. #6



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    03-16-2011
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    Sacramento, CA
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    1979 Dodge D-50
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    Chevy V6
    You just replace the hole thing. Unbolt the master and pull the 4 nuts in the cab. Forget trying to just replace the diaphragm.
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  7. #7

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    Location

    Jacksonville, FL
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    G54B-T
    carb clean isnt good for the hoses but it should be okay unless theyre already in sad shape.

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