Discussion:
Error code 77

Unit comes up with check engine light on after several hours of service. Always code 77. Changed out sensor due to wiring rubbed thru. Was good for 3 days. Code 77. Output voltage stays constant , no pulse up and down. I'm assuming that this is a rich signal. Machine has 4435 hours. Was wondering if lp vaporizer is full and needs to be replaced. Is there. Kit available or full replacement ? Will this take care of the rich syndrome or is it best just to hook up the laptop?

Model is a G33P-5 GM 2400 engine. With Woodward lp system
  • Posted 2 Apr 2015 08:15
  • Modified 2 Apr 2015 08:21 by poster
  • By ron_k
  • joined 2 Apr'15 - 122 messages
  • North Dakota, United States

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.

Techlift grows with acquisition Drummondville, QC, Canada

PREMIUM business

Noblelift
Global leader and manufacturer of high quality electric, lithium-ion, and IC material handling equipment.
Global Industry News
edition #1251 - 9 October 2025
In this week’s Forkliftaction News , hydrogen power is a theme as we report on the US marking its 10th annual National Hydrogen and Fuel Cell Day, an initiative to promote the benefits of the clean energy source... Continue reading
Techlift grows with acquisition Drummondville, QC, Canada
Upcoming industry events …
October 14-16, 2025 - Antwerp, Austria
October 15-17, 2025 - Bangkok, Thailand
November 17-19, 2026 - Luanda, Angola
Movers & Shakers
Todd J Doxsee Todd J Doxsee
National dealer development manager, Castle Equipment Company
Sales operations, Heli
Chief financial officer, Cyngn
Executive vice president and chief commercial officer, East Penn Manufacturing
Upcoming industry events …
October 14-16, 2025 - Antwerp, Austria
October 15-17, 2025 - Bangkok, Thailand
November 17-19, 2026 - Luanda, Angola
Latest job alerts …
Philadelphia, United States
Dayton OH/Cincinnati OH, United States
Prospect CT, United States
Davenport, IA, United States
Fact of the week
Brothers Adolf ("Adi") and Rudolf ("Rudi") Dassler split their shoe company after WWII due to a bitter feud, and established the rival companies of Adidas and Puma. Their personal animosity and business rivalry divided their German hometown Herzogenaurach. The town became known as "the town of bent necks" due to the intense loyalty to each brand.