Peterbilt Engine Fan Relay at Julia Cupp blog

Peterbilt Engine Fan Relay. This pdf document shows the wiring diagram for the peterbilt 379 truck model. Do not pull or pry on the fan in an attempt to rotate the crankshaft. See a visual representation of the relay setup and connections with wire colors and terminal designations. It works when i turn it on manually, but it won't come on. The best way to determine what is causing the engine fan to stay on is to connect a service tool like cat et software and monitor. It includes the components and circuits for the speakers,. Thats the swtich that will turn the fan on when the a/c is on and say your not. You could have a bad high press switch on the a/c. Engine fan does not turn off. Is it a sensor causing the fan not to turn on when the water temp. Do not attempt to rotate the crankshaft by pulling or prying on the fan. I have changed toggle switch in cab, air solenoid on firewall and temperature sensor. This practice can cause death, personal injury,. Learn how to identify and troubleshoot the relays behind the dash in a peterbilt truck, including the ignition relay and the fuel pump relay.

Engine fan does not turn off. The best way to determine what is causing the engine fan to stay on is to connect a service tool like cat et software and monitor. See a visual representation of the relay setup and connections with wire colors and terminal designations. I have changed toggle switch in cab, air solenoid on firewall and temperature sensor. Is it a sensor causing the fan not to turn on when the water temp. You could have a bad high press switch on the a/c. It works when i turn it on manually, but it won't come on. Thats the swtich that will turn the fan on when the a/c is on and say your not. Learn how to identify and troubleshoot the relays behind the dash in a peterbilt truck, including the ignition relay and the fuel pump relay. This practice can cause death, personal injury,.

Q&A Peterbilt 379 Engine Fan Issues Wiring Diagrams, Relay Locations

Peterbilt Engine Fan Relay Do not pull or pry on the fan in an attempt to rotate the crankshaft. I have changed toggle switch in cab, air solenoid on firewall and temperature sensor. It includes the components and circuits for the speakers,. Do not pull or pry on the fan in an attempt to rotate the crankshaft. Is it a sensor causing the fan not to turn on when the water temp. It works when i turn it on manually, but it won't come on. Engine fan does not turn off. Do not attempt to rotate the crankshaft by pulling or prying on the fan. This practice can cause death, personal injury,. Learn how to identify and troubleshoot the relays behind the dash in a peterbilt truck, including the ignition relay and the fuel pump relay. The best way to determine what is causing the engine fan to stay on is to connect a service tool like cat et software and monitor. See a visual representation of the relay setup and connections with wire colors and terminal designations. This pdf document shows the wiring diagram for the peterbilt 379 truck model. Thats the swtich that will turn the fan on when the a/c is on and say your not. You could have a bad high press switch on the a/c.