Discussion:
Over heating

I have a mitsubishi FG15 and the fork lift is over heating. When you put your foot on the gas and warm the fork lift you can see the temp gauge shoot up and go towards the red. It doesn't take much time to almost over heat by what the gauge says. When you let your foot off the peddle it slowly makes it way down on the temp gauge. I took out the thermostat to see if there is good flow threw the coolant system. From what I can see threw the top of the radiator it way flowing really good. I replaced the coolant temp sensor, it wasn't that. I checked the coolant system with a thermal temp gun and system was reading about 145F all the threw the coolant system. If anyone has any suggestions on how to check why it's over heating it would help out greatly. Thanks
  • Posted 13 Sep 2015 01:08
  • By KeithH
  • joined 13 Sep'15 - 2 messages
  • California, United States
Showing items 1 - 4 of 4 results.
I just went though this exercise with my old Toyota. The "sensor" is simply a RTD in instrumentation parlance. From my perusal of the literature the resistance vs temp for these devices, from at least 70's - 80's trucks, they are pretty much all the same. Google up and you should easily find something that will crossfit.
  • Posted 3 Aug 2017 23:49
  • By Jetty
  • joined 12 Mar'17 - 44 messages
  • Texas, United States
www.BacliffRV.com/Toyota_Forklift
wondering what the part number for the tempo sensor was. we have a FG15 that as soon as you turn the key the temp starts rising without it even turning over.
  • Posted 3 Aug 2017 23:22
  • By jeremy_h
  • joined 3 Aug'17 - 1 message
  • AL, -
The engine feels hot but not burning hot. The radiator is warm to the touch and not geysering when I take the radiator cap off. The Temp at the head is about 160F.
  • Posted 15 Sep 2015 01:42
  • By KeithH
  • joined 13 Sep'15 - 2 messages
  • California, United States
145f is below the operating temperature. Does it act like it is overheated, (motor feels hot, can't take the radiator cap without a geyser, can't touch the radiator without getting burnt)? Did you measure the temp of the head when the gauge says it is overheated?
  • Posted 13 Sep 2015 22:32
  • By mrfixit
  • joined 11 Dec'08 - 1,434 messages
  • New York, United States

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