Cat Lift Trucks (& Caterpillar) P5000:
Cat P5000 no cold start .

Hello everyone. I'm working on a Cat P5000 and no start when cold , engine runs fine when using B12 to start. So far I've replaced the injector holder with everything already assembled , including new injector. I checked voltage at the injector plug while turning over engine and got 3 volts going to the injector , from what I read the injector needs 10.5 volts for a rich condition to start. I pulled the plugs from the injector driver and the ECM and found the pulses from the cam and crank sensors , so I know they both work. I checked the voltage coming out of the driver unit and still the same voltage , 3 volts. At this point fingers are pointing at the injector driver. If anyone has anymore info on the principles of operation for the starting system , between the ECM and the injector driver please let me know. Thanks in advance.
  • Posted 18 May 2023 05:35
  • Discussion started by Wrenchtwister
  • Kansas, United States
Showing items 1 - 4 of 4 results.
Well guys I tested the ecm and the injector driver module and they both had the same voltage meaning the modules are good. The only thing left is the cam and crank sensors. I received the parts and installed them , the engine fired up. So this issues was because the cam and crank sensors were bad. Also I replaced the sensors with the OEM sensors.
  • Posted 23 May 2023 06:21
  • Reply by Wrenchtwister
  • Kansas, United States
I checked fuel pressure at the vaporizer and adjusted to roughly 5 lbs.
  • Posted 19 May 2023 01:05
  • Reply by Wrenchtwister
  • Kansas, United States
What is the fuel pressure at the regulator/vaporizer?
  • Posted 19 May 2023 00:54
  • Reply by DanielJ
  • California, United States
DanielJ
Serial number is AT3501911
  • Posted 18 May 2023 23:53
  • Reply by Wrenchtwister
  • Kansas, United States

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