fan clutch seems stuck on

[vipersinu2]

I bought a used 2003 explorer for 1500 bucks with 180,000 miles ( I put a new 2010 engine last week 2000 miles on it) fan clutch seems stuck on and seems like there is a bunch of power loss. It is hot here in florida about 80 at night and still on nostop whine from the fan. ( I took the fan off and whoa abunch more power!!) I noticed in the morning with the cool air it runs great! but i don't remember if I heard the fan or not. I will check tommorrow morning.

Is there a way repair clutch by spraying lube to loosen up clutch? a new fan is around 50 bucks or should I go with an electric fan?

I replaced engine
mass air flow ( check engine light was on)
throttle position sensor
soaked injectors in marvel oil and sprayed out with carb clean.
fuel filter (one half of the filter was clogged and dark brown dirty gas came out. what a pain in the ass job to replace that filter)
air filter, belts, and hoses
rear blend door actuator

things that need replaced
rear has loud whine (ordered one on ebay)
fresh air/ rec air door broken
upper ball joints boots torn but no play yet
steering u joint boot ripped also


for around 3200 bucks so far and a nice truck should last a bit!

 

[JoshMcMadMac]

You cannot fix a failing fan clutch; it must be replaced. The electric fan is not too tough, although not quite as cheap as just buying a new clutch. Here is a write-up you can reference on the electric fan:
http://www.explorerforum.com/forums/showthread.php?t=294228

 

[Argentimage]

I read through this referenced 4.6 article. My questions pertain to the '05 4.0 L.

Are these known to be failing?

And how do we know at 80 ambient if the fan is supposed to be spinning or not?

How do you test its function?

 

[vipersinu2]

changed my clutch fan today, much better but still lacking power. Still not as much power as the morning cool air, although it is 100 here in florida.

should i disconnect the battery for over night. will the truck relearn how to run with the new fan?

I took off the old clutch fan, spinning the large nut was very tight when spinning by hand, after about 6 full turns it would break free and spin freely.

I am guessing that clutch fan was bad?

 

[JoshMcMadMac]

I read through this referenced 4.6 article. My questions pertain to the '05 4.0 L.

Are these known to be failing?

And how do we know at 80 ambient if the fan is supposed to be spinning or not?

How do you test its function?

There is little or no difference between the 4.6L and 4.0L fan. The clutch is a wear/maintenance item, so it is not that they are "known to be failing" but more that they get worn out. The ambient temperature does not directly affect when the fan runs, the engine/coolant temperature does. You can check it easily by spinning it by hand when the engine is cold...if it spins freely, it is still good.

changed my clutch fan today, much better but still lacking power. Still not as much power as the morning cool air, although it is 100 here in florida.

should i disconnect the battery for over night. will the truck relearn how to run with the new fan?

I took off the old clutch fan, spinning the large nut was very tight when spinning by hand, after about 6 full turns it would break free and spin freely.

I am guessing that clutch fan was bad?

There is nothing electronic for the vehicle to adjust for, so disconnecting the battery will not change anything. It sounds like the clutch is worn out if it is stiff when cold. The entire fan does not need replaced, just the clutch.