That’s the wrong diagram I think. That’s for a older model, it doesn’t show the ecm to cab harness. I’ll keep looking.
try this http://84.204.204.67/Electro/sk25762.pdf
This is the ecm wiring diagram for you engine. https://www.thetruckersreport.com/truckingindustryforum/attachments/5ek-6ts-9ck-pdf.262563/ You’ll...
The 2 single wire sensors on the front of the thermostat housing are a signal stat for temp gauge and the other is a alarm stat for the warning...
its possible you have 2 different issues, if the solenoid is engaged at startup that tells me signal from the ecm is good. Have you tested for...
Have you checked for power at fan solenoid?
Does your engine fan come on if you flip your switch on the dash?
Does your engine fan come on if you flip the dash switch?
The 3 pin wire, doorman makes one if you don’t want to spend the money for a cat one.
It always sits at 14.5, I haven’t noticed any change before it happens.
I have a 2009 peterbilt 367 with a c-13. My dash cuts out at cold temps -15c and colder never in the summer. The dash quickly cuts out and then...
[ATTACH] I know this thread is a little old but I was looking for help on this same issue. What I ended up doing was removing the top dash cover...
So we finally found the cause of constant engine fan. Wire 226 out of the manual fan switch to the fan air solenoid had constant power When it...
I think the 3406e 40 pin diagram is the same as c12, so I’m working off that to trace the system. I’ve changed the temp sensor and still had the...
manasteel you still around, I’d like to try and tackle this issue again. Lol
I have a 1998 pete 379 c12 (9ns). For the longest time my engine fan wouldn’t come on when my coolant temperature got high so I just used the...
I changed the coolant temp sensor with no luck. Can you tell me what pin out of the ECM feeds the fan solenoid and what number the wire is. I'm...
not sure what that is, like 3406e? Or the engine serial is 9ns02017
