Results 1 to 11 of 11

Thread: temp question

  1. #1

    Array
    Status
    Offline
    Join Date
    06-03-2016
    Posts
    12
    Location

    north bend washington
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G63B

    temp question

    hey all new to the sight. i hope i am in the right spot. i have an 88 mighty max with the 2.0 motor. When i bought it a month ago i noticed how far the fan is away from the radiator, and the temp guage and sending unit were not working correctly. I have put an aftermarktet temp gauge in and put an electric fan on attached to the radiator. the timing belt and water pump were changed just before i bought the truck. i notice that the temp still tends to be on the higher side, but the truck doesnt have the characteristics of being hot other then from the temp guage. i took out the thermastat out and still climbs to 225 when ever the temp outside is hotter about 80 or above, and also climbs when going up hill. my question is it normal for these trucks to run on the higer side like this or do i need to be doing some more troubleshooting?
    thanks

  2. #2

    Array
    Status
    Offline
    Join Date
    06-03-2016
    Posts
    12
    Location

    north bend washington
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G63B
    i just noticed there are 2 sending units one works the gauge. What does the other one do ? i replaced the one that works the gauge already

  3. #3

    Array
    Status
    Offline
    Join Date
    12-13-2014
    Posts
    122
    Location

    redding ca
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    one tells the temp on the gauge the other is for the ecm.

  4. #4

    Array
    Status
    Offline
    Join Date
    12-13-2014
    Posts
    122
    Location

    redding ca
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    does your truck have a/c? i found that my truck would stay in the middle and 3/4 way after installing the ac with fan shroud. before i installed the ac it would stay about under half way and i did not have a shroud on it at the time. im thinking of putting a better alternator and electric fan setup on it.

  5. #5

    Array
    Status
    Offline
    Join Date
    06-03-2016
    Posts
    12
    Location

    north bend washington
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G63B
    no it is pretty stripped down.has a weber carb on it alot of emission items are missing as well. i put the thermostat back in after testing it to make sure it was opening and now my gauge is reading 240 degrees, but yet i can still put my finger into the radiator and feel the fluid. it is hot but not boiling hot

  6. #6

    Array
    Status
    Offline
    Join Date
    06-03-2016
    Posts
    12
    Location

    north bend washington
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G63B
    on sunday it reached 92 degrees here in washington when i got in the truck after work the temp gauge was reading between 130 and 140 before i had even started the truck? not sure if that helps with figuring out my problem

  7. #7

    Array
    Status
    Offline
    Join Date
    12-13-2014
    Posts
    122
    Location

    redding ca
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    try removing the thermostat and see what it does. the water pump could be bad. if you see the water circulating than the pump should be fine. also make sure that their is no air in the system. just leave the radiator cap off and let it cycle the thermostat once or twice. it might spill a little out the top of the radiator if its full.

  8. #8


    Array
    Status
    Offline
    Join Date
    03-21-2011
    Posts
    777
    Location

    WA
    Vehicle

    1989 Mitsubishi Mighty Max
    Engine

    4G63-T
    What brand is the gauge? Could be broken or not calibrated. Temp in my truck climbs when there's an air bubble in the cooling system.
    1989 Mitsubishi mightymax; 1990 4g63 6 bolt swap: malhe 9.0 pistons, eagle h beam rods, acl race bearings, rebuilt head, evo 3 16g, aem afpr, Maft, 3" gm maf blow through, walbro 255 fuel pump, hks ssq bov, fmic, coil over plug, FIC 750 injectors, dsmlink, apexi avcr, AEM eugo, s90 throttlebody, JMF FIAC block off plate. LT1 T56 in the works.
    Why a mightymax? Why not? 18 psi FTW.

  9. #9

    Array
    Status
    Offline
    Join Date
    06-03-2016
    Posts
    12
    Location

    north bend washington
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G63B
    looks like the gauge isnt callibrated. it was an oriellys gauge, but was using the stock temp sensor because there options didnt fit it appears to be 60 to 70 degrees off.

  10. #10



    Array
    Status
    Offline
    Join Date
    03-20-2011
    Posts
    4,115
    Location

    Pittsburgh, PA
    Vehicle

    1980 Dodge D-50
    Engine

    G54B
    You can't mix sensors and gauges - you need the sensor that came with the gauge to get it to work. Equus (formerly sun gauges) sells an adaptor kit for pipe thread to metric so you can install the gauges with pipe thread on foreign vehicles. When I get a chance I will look at the package I have and I will post the part number.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  11. #11

    Array
    Status
    Offline
    Join Date
    06-03-2016
    Posts
    12
    Location

    north bend washington
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G63B
    that would be great. i know how important the temp guages are in these rigs.

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •