Landstar So Far

Right. If you're gonna be broke down, home is the place to do it .

 

What exactly is your issue? Might be an ECM if your having problems on multiple circuits. Or either a very bad ground somewhere, starter to frame & etc

 

Sounds like you got a hitch in your giddy up.....don't mean to get too technical on ya

 

Hmmm with no other symptoms it’s hard to tell. For me at least. The fan is only programmed to come on by temperature or from hi pressure in the a/c. And///// maybe if there’s a fault in the fan solenoid circuit... because by default if there’s an issue with the fan circuit the computer keeps the fan on to prevent overheating...

I would check the wires in and out of your fan solenoid, check for chaffing or anything out of the norm, and also unplug the lead to you fan solenoid and check for power (works better if you have a fan switch you can turn on), then pull the plug off the OEM side of the ECM and pull up your wire diagram from quickserve and read the pin out for fan solenoid... then inspect the male pins on the ECM for green discoloration / corrosion

 

When your talking to them at the service counter start recording and set you phone on the counter......

 

If you do go to Frieghtliner - pm me and I will give the name for the customer relations manager . I am kinda not allowed to talk to anyone else.... if you know what I mean