Jump to content
  • Welcome To Mopar1973Man.Com LLC

    We are a privately owned support forum for the Dodge Ram Cummins Diesels. All information is free to read for everyone. To interact or ask questions you must have a subscription plan to enable all other features beyond reading. Please go over to the Subscription Page and pick out a plan that fits you best. At any time you wish to cancel the subscription please go back over to the Subscription Page and hit the Cancel button and your subscription will be stopped. All subscriptions are auto-renewing. 

Fan Clutch Issue


Recommended Posts

LOL... I just wanted to be like Mikey. He stuck a stick in and stopped his.. :lmao: It's not locked up but it is really tight. This was replaced in the last 4 months. Wish I hadn't throw the old one away.:banghead::doh: Wondering if in the cold weather I could take it off and see if my mileage came back up. Any thoughts on removing the fan in cold weather??

Link to comment
Share on other sites

  • Owner

After making that video of my fan clutch which happens to be a nearly 10 year old fan clutch now and it still works fine for lockup while towing you can still hear it like a turbo prop plane. But after finding out that fan rolls free like that I call BS on the need for electric fan because virtually the fan is not creating any load as long as its unlocked.I ran for nearly a month in the cool of the winter and seen no change in coolant temps nor did I see a change in MPG's because the fan is not loading the engine in anyway...But if a fan is locked up or dragging yeah I can see it causes more noise and reducing MPG's slightly but as for needing to switch to electric fans no... Not required these fan clutches do there job just fine...

Link to comment
Share on other sites

everything i read said they could fail with either condition, free spinning or to tight even with good bearings. mine is oe also, just doesnt spin as frre as yours. i cna still hear it cut on and off. so if we are not over heating or cooling I cnat see a problem with either.maybe this had something to do with the wild swings in my coolant a while back i dont know. i do know it seemed to cut on and of just like it always has. since the haul over the mountain my wild swings in temp have stopped:hyper:. i get about a 6* or 7* swing now. fan still works the same as always. no electric for me.

Link to comment
Share on other sites

  • 2 months later...

I hate to revive an old tread but I can't hold this info.Apparently the fan hub assembly has a substance that when energized with pulsed electricity it will change the viscus of the fluid causing the fan to fluidly lock-up to the hub. The ambient temperature plays a part in how much free rotation will a cure. Semi's rely on air pressure to activate the clutch fan. a little less harmful on 2x4's until it in gauges, then run!

Link to comment
Share on other sites

  • 2 weeks later...

LOL... I just wanted to be like Mikey. He stuck a stick in and stopped his.. :lmao: It's not locked up but it is really tight. This was replaced in the last 4 months. Wish I hadn't throw the old one away.:banghead::doh: Wondering if in the cold weather I could take it off and see if my mileage came back up. Any thoughts on removing the fan in cold weather??

I had a 77 Newport with a 440 back when I was bullet proof. Saw the fan spin excessively and the car also ran hot. So while running I grabbed the fan.:stuned: It stopped in my hands and I could actaully spin it opposite of the engine. This happened again but in our 89 Ramcharger. Actually it overheated while idling. Getting older my built in armor plating fades and did not use my bare hands to test the fan this time around. It was bad and I could keep it from spinning with the engine running. :lol:
Link to comment
Share on other sites

×
×
  • Create New...