Cat Lift Trucks (& Caterpillar) GP45K:
cat gp45k crank wont start

Hey ive got a cat gp45k crank wont start. seems like its getting to much propane if I hold the regulator hose open and let some air in it will kindof run. i tried replacing the regulator $500 later did no good. I also dont have any lights on the dash I dont think this has a digital dash but figure I should have something. I checked all the fuses no cigar. I dont have a scan tool to communicate with it either. Can I do the pedal dance to pull the codes? its the nissan tb45.
  • Posted 10 Nov 2023 01:26
  • Discussion started by tomcat955
  • Wisconsin, United States
Showing items 1 - 3 of 3 results.
Still does not run after reassembly. I did notice that if I hold the secondary injector out of the unit the little one and go to crank it the solenoid does not open at all. A multimeter shows very little voltage coming from the plug. What should it look like?
  • Posted 17 Nov 2023 16:55
  • Reply by tomcat955
  • Wisconsin, United States
I took it all apart and found a little dirt in the assistance injector.. maybe was stuck open? both of the large solenoids I can here them open and close maybe leaking past. going to reassemble and see what happens.
  • Posted 15 Nov 2023 22:49
  • Reply by tomcat955
  • Wisconsin, United States
sounds to me like you have a bad lpg injector, that throttle body should have 2 of them mounted side by side. One is a main injector (2 large solenoids) and the other is an assistance injector (smaller solenoid mounted on the side of the injector body.
As far as reading codes? they only way i know of is to use a handset or laptop with the cat program and the correct cable.
  • Posted 12 Nov 2023 17:34
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!

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