The fan clutch is not an expensive part and it is difficult to test.
Jeep wrangler fan clutch test.
It s a sure sign that the internal fluid that provides the clutch action is leaking.
If you are doing the work yourself all of the above will be well under 500.
2 check for a worn bearing.
I m sure a lot of people will disagree with me on this but if it was my jeep i would just go ahead and replace the water pump thermostat and fan clutch and see where you are at that point.
This how to video is on how to replace fan clutch full easy install guide.
It would need to be far more worn before you would notice it doing that test.
If still a problem then i d change out the radiator.
How to tell if a fan clutch is defective.
Whats up guys today i will show you how to remove and replace the fan clutch on a jeep wrangler 2 5 year models 1997 to 2002 please be very careful while wor.
When it begins to fail you will notice it heating up at idle but it will pass the spin test you mentioned.
1 check for oil streaks or dust collected on oil streaks on the fan clutch it s a sure sign that the internal fluid that provides the clutch action is leaking.