n14 fan almost always on

that old cummins should purr now

 

do you have any codes now? your having the same problem as before? what all have you checked and replaced, recap everything to get a better picture, and you have access to insite if i remember correctly?

 

Mine does that runs all the time when ambient temperture is below 40,once the air warms up in runs normal

 

My husband has a N14 in his truck and recently he's started having issues with the fan starting running all the time until the engine gets to 205 then it shuts off. He replaced the fan switch but it does the same thing. What could be the issue?