Komatsu FG25T-14:
Fuel Pressure Sensor

Hi All,

I'm working on a FGT25T-14 (589108A) and after about ten minutes of running the truck will not allow any throttle action, I believe its in the fuel pressure sensor. I'm curious if the screw in fuel pressure sensor is a common failure point on these trucks and if anyone has any advice on this condition.

Thanks in advance!
  • Posted 11 May 2023 05:56
  • Discussion started by Mechanicsville8
  • Virginia, United States
Showing items 1 - 15 of 20 results.
Scratch that, we figured it out, I appreciate everything Scott_
  • Posted 19 May 2023 22:26
  • Reply by Mechanicsville8
  • Virginia, United States
Hey Scott_

Same truck had a different problem yesterday. I labeled the post "No Crank, No Start" if you have time let me know what you think.
  • Posted 19 May 2023 21:06
  • Reply by Mechanicsville8
  • Virginia, United States
Ok, well I do appreciate everything! if it comes back i'll let you know what I find in the future.
  • Posted 19 May 2023 03:05
  • Reply by Mechanicsville8
  • Virginia, United States
It is possible that the computer was seeing a overheating condition in what they call step one that would go into limp mode and after it sits or is restarted would go away but with no check engine light only guess see if problem goes away hope l was some help.
  • Posted 19 May 2023 01:22
  • Reply by Scott_
  • Pennsylvania, United States
Scott
Hey Thank you the water was low about half a gallon on the truck., but no leaks, I'll keep an eye on it. Oil didn't look contaminated either, I'll just have to keep watching it.
  • Posted 18 May 2023 21:03
  • Reply by Mechanicsville8
  • Virginia, United States
Can you tell me which way the water flows in the regulator? while mounted on the forktruck is it from left to right?
  • Posted 18 May 2023 03:12
  • Reply by Mechanicsville8
  • Virginia, United States
Thank you fore the very detailed instructions!
  • Posted 18 May 2023 02:30
  • Reply by Mechanicsville8
  • Virginia, United States
First make sure you are getting water to it and there is no blockage in the hoses and pipes it needs hot water to flow to keep it from freezing up make sure your rad is full and the motor is not aaoverheating and has flow to block first before you by a converter it is a Nikki converter and they are not cheap also check the pressure at top there is a plug looks like has a Phillips screw driver slot of you must remove and install gauge it should get 5psi when running and cranking could see more with key on but should be about 5psi running.also make sure there is no air in block there is a Small l believe 10mm bolt at water pump open it up and make sure you have water and no air if rad low could have air in block
  • Posted 18 May 2023 01:59
  • Reply by Scott_
  • Pennsylvania, United States
Scott
I may have found the problem, my regulator is freezing up. Is this a rebuild or purchase a new one kind of thing?
  • Posted 18 May 2023 01:28
  • Reply by Mechanicsville8
  • Virginia, United States
Thank you!
  • Posted 18 May 2023 01:27
  • Reply by Mechanicsville8
  • Virginia, United States
Pull the floorboards on the left side near the fuse boxes the connecter has a dust cover over it it is a small square connector it only uses four wires after you pull the dust cover it is a female connecter a male cable fits in then on the other end is the obd 2 connector to go to the scanner
  • Posted 18 May 2023 00:26
  • Reply by Scott_
  • Pennsylvania, United States
Scott
can you tell me where to locate it? I haven't seen it, and I may have a connector i have a few different ones.
  • Posted 16 May 2023 21:31
  • Reply by Mechanicsville8
  • Virginia, United States
There is a place to connect to but it is a special cable a scan tool for obdll will connect but you need the cable..
  • Posted 16 May 2023 21:28
  • Reply by Scott_
  • Pennsylvania, United States
Scott
And thank you for the advice on how to fix the dash lights, I will look into this problem, Lord willing, This week.
  • Posted 14 May 2023 09:21
  • Reply by Mechanicsville8
  • Virginia, United States
Is there an OBDII port on these or any where to connect in?
  • Posted 14 May 2023 09:20
  • Reply by Mechanicsville8
  • Virginia, United States

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