Discussion:
Intermittent Shutdown

I have a Hyster H120XM L005 GM 4.3 that has an intermittent shutdown issue. Machine may run 3 minutes, may run 30 seconds before code throws and shuts down. Machine oil levels are good, is not running hot, has new lock off and regulator, runs great until shutdown then cycle key and it immediately starts and runs again. Haven't been able to get the code to flash, I don't think it is storing and the local dealer does not support the software to pull codes with a computer. I'm assuming wiring, faulty sensor, or ECM is the issue. Any good starting points to suggest?
  • Posted 1 Jul 2022 01:01
  • By Mech_94
  • joined 1 Jul'22 - 1 message
  • Georgia, United States
Mech_94
Showing items 1 - 1 of 1 results.
I've had similar issues with that 4.3 GM, (not in a Hyster), solved by replacing the ignition control module in the distributor.
Also, check battery voltage when running, those ecu's will cut off with a higher voltage than normal.

Also, check ground connections, especially from the ecu.
  • Posted 5 Jul 2022 16:11
  • By Speedfreak
  • joined 24 May'18 - 103 messages
  • Niederlande, Netherlands
.

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Global Industry News
edition #1247 - 11 September 2025
In what may prove to be a sign of things to come, Canadian materials handling equipment lithium-ion battery manufacturer, UgoWork, has announced battery assembly for some forklifts bound for the North American domestic market will now be done in the US. See the story for full details... Continue reading
Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025

Showcased in the Virtual Expo

Movers & Shakers
Andries Retief Andries Retief
Chief development officer, DHL
Director, ICHCA Australia
CEO, TVH
Sales and operations director, Logitrans A/S
Aichi RX07B
Yokohama, Japan
Used - Sale
Terberg RT223
Balling, Denmark
Used - Sale
Upcoming industry events …
September 24-25, 2025 - Tangiers, Morocco
September 25, 2025 - South Brisbane, QLD, Australia
October 23, 2025 - Atlanta, GA, United States
Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025