fan noise on 08 ranger

[brew99]

So I bought a used 08 Ranger sport (only 10K) and when this thing starts or at slow speeds, the fan noise sounds like a jet engine. The fan is always spinning. Is this normal?

I did some research online and it pointed to the fan clutch, so I tested by spinning the fan (engine off, at cold and warm), and the fan hardly spins, maybe moves only 45 degrees. From what I've read, this indicates a locked fan clutch.

So i take it in to the dealer, who tells me that this is normal, and that the fan works of air pressure passing the rad, so that at higher speeds the pressure past the rad is higher and the fan turns off. Is this true.

I'm totally confused now, how this 2008 3.0L fan is suppose to work.

Any insite?

Thanks all

 

[Big Jim M]

Jesus!!

So I bought a used 08 Ranger sport (only 10K) and when this thing starts or at slow speeds, the fan noise sounds like a jet engine. The fan is always spinning. Is this normal?

I did some research online and it pointed to the fan clutch, so I tested by spinning the fan (engine off, at cold and warm), and the fan hardly spins, maybe moves only 45 degrees. From what I've read, this indicates a locked fan clutch.

So i take it in to the dealer, who tells me that this is normal, and that the fan works of air pressure passing the rad, so that at higher speeds the pressure past the rad is higher and the fan turns off. Is this true.

I'm totally confused now, how this 2008 3.0L fan is suppose to work.

Any insite?

Thanks all

What sort of mechanic did you take it too??? The guy has his head on backwards..

The fan has a hydralic clutch in it. It is operated by the VOLUME of fluid in it.
There is a heat sensitive spring on the front of the unit. That spring operates a valve inside the clutch. As the temperature rises that spring CLOSES the valve allowing the fluid to apply pressure to turn the fan..

Sounds like yours is BROKE and you need a new one. I always go down to the parts house and buy whichever one has a lifetime warranty..

Big JIm

 

[brew99]

Well, that is what i thought also (you just explained it in more detail, thanks).

I took it to my local Ford dealer, that is who told me this. They said it always spins at low speed or idle, and will only turn off at highway speed (not sure how i would verify that!!!).