Newbie with Truck over heating
Hello, My family and I are venturing out into full time rv living. This is my first time owning a truck with this new venture and have a question related to my truck. We bought a 3500 dually 2...
Forum Discussion
The thermostatically controlled fan is a bit like a torque converter, when it heats up a spring expands opening a passage which allows the fluid in the clutch to make contact in the other compartment with the vanes and thus engages the fan. The fan engaging in the morning at start is because fluid at rest drains into what I might call the active compartment and transiently activates the fan. I used to wedge the spring on my overheating jeep grand Cherokee to get better cooling at low speeds.the fan was ineffective at speeds above 3000 rpm but since we are talking diesel here (I hope) you might try that as a brief test to see if it makes a difference.
