Air system problems
 

Hi,
Has anyone got any advice please. Driving the car earlier and turned on my air system all was fine until I turned the fan upto number 20 then it suddenly developed a loud whirring sound like something was wrong with the fan.When I turn it down to 15 it stops.

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This may be better placed in the technical section

macafee2

More info needed, does the noise occur with engine off? Was air con active? Turn on ignition, with a c off if the noise is present then likely heater fan bearings. If not start engine and activate a c with bonnet open and see if noise appears near the pulley side of the engine. If it does then its air con component related.