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Guys. I had a 4.2 supercharged 2005. One day i was in a stop-n-go traffic and notice stem coming from the bonnet and after 5 mins of " gentle " driving to a spot to park the car i notice it is leaking coolant. So callup a tow trunk and tow in back to a garage i know. That's happened last month.

So at first my mechanic told me he spotted 2 coolant - heater hoses that is leaking which i order and had it installed. Everything seems ok and the mechanic return the car for me which after 10mins of driving,coolant leaking all over the place again. So got tow back,and had them look at it again. This time they told me a outlet area on the radiator housing has cracked and causing the coolant to leak,fine than new radiator in. I told them to tested it before handing it over to me this time but again after 2 days,got a call from my mechanic saying that the car still over-heat,they now say my viscous fan that cool the radiator is not spinning and suspect the motor for the fan has died. So again new fan w/motor replaced,i thought this time everything should be fine. But again,installed the fan,tested it for a few times and the car over-heated again,so they're now saying something is not telling the fan to spin,i think both low and high speed is not working aswell or 99% of time both hi and lo will not come on,maybe very once in awhile,the high speed fan will turn on. (( Even the temp gauge close to redline,the high-speed won't turn on ). BTW,3 other coolant hose has replaced during this process,i'm not really suspecting either the mechanic don't know how to fix or check on this car and just told me to keep replacing parts which he THINK is not working or .......

Any idea guys ?? Had the car dropped off with them close to 2 months now and spent quite alot of money on replacing parts which i think some are not need. So any idea what i should ask them to look for ?? They run a scan and had a code : P0480 fan 1 control circult.

Right now the car drives fine,engine power,A/C and everything works. Mechanic can took it out for a test drive for 30mins still nothing happens,than all of the sudden the temp gauge climbs to the redline again. The fan is not running...maybe 1 time out of 10. So i'm planning to replace the coolant temp sensor aswell but another direction ?? And where is the fan control unit or motor's fuse and relay located at ??
 

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Do you have a Range Rover or a Range Rover Sport?

The fan does not have a motor. It is a electro-viscous, and can only spin up to as fast as the engine will turn it, but can be controlled to spin slower. The only way for it to not be spinning is for the viscous (already replaced, but called a 'motor') to be fully open, or for something to be stopping it.

The reason I ask about model is that the L322 has small plastic brushes that go along the inside of the fan shroud, and if not re-installed perfectly, will drag on the fan, and cause it to stop spinning. The L320 does not have this.
If you are unsure, check the beginning of the VIN, SALS is L320, SALM is L322.

If this is the case, the brushes can be removed without ill effect, and it should take care of the issue, but I would double check the installation of the fan shroud to make sure it is secured properly.

There is no fuse for the fan, do not replace the temp sensor, the fault is there because it should be, as the fan has been forced to stop spinning by something.
 
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