Common problems of the Mitsubishi Pajero is the “ fluctuating temperature gauge ”.
The symptoms are simple, suddenly, with no notice, the temp gauge shows that the engine’s temperature is in the red area, if you’ll stop and check, you will see that the coolant is not boiling and the engine is not really hotter than usual. In that case, you may suspect that you gauge shows it wrong…
The problem occurs due to a bad soldering on the resistor, the fix is simple, re-solder it again…
Remove those 2 screws and carefully pull that plastic clip out to remove the cover.

Unscrew the following 4 screws, carefully pull the gauges panel towards you, there are 3 connectors on the top of it (at its back) so be careful…

Look at the 5 screws on the white plastic cover (right side) , remove them and pull the cover carefully…

Remove that screw, carefully take the board out…

Now, you can see the resistor that cause the issue, it is the R10 one, circled in the picture below. You may not see that the soldering is broken, I didn’t, till I touched the other soldering with the soldering iron and the resistor fell…

Hold the resistor in place and solder it to its place – both ends, Be careful not make the solders too big or “outside the lines” on the board…

Put the board and the white cover back in place, screw the bolts of it but then the km’s LCD will dislocate and this is how you put it all back to all work 100% …
EXTRAS:
Remove the perspex (clear plastic) gauges cover by pressing and pushing 3 clips at the bottom, there are 3 more at the top of it…
You will notice on the speedo gauge that there is a lump (check on different angle) you may be able to see it close up…

Now to fix it this problem, with clean hands, press the plastic gauge near the LCD panel with your thumbs till you’ll hear 4x clicks…

Now it’s time to put everything back together…!;)