2008 Fiesta Titanium Loud Fan Sound From Engine.

[stevenford0022]

Hi there,

Just bought a 2008 titanium and notice a large sound that sounds like a fan coming from under the bonnet.

I notice it when ignition is turned on it comes on straight away. I usually turn ignition off before i step out the car but I'm pretty sure it runs constantly as I drive.

Is this normal??

[Mariner]

It is if you have the aircon switched on.

The engine fan is used to cool the aircon heat exchanger as well as the radiator.

[stevenford0022]

Cheers, Ill turn the aircon off and see if it stops.

[Colin1969]

Air con fan won't work with ignition on , engine has to be running and AC pump on for that fan to run.

[Mariner]

Air con fan won't work with ignition on , engine has to be running and AC pump on for that fan to run.

Vert True :-)

[Overland]

Most likely the water temperature thermostat switch has failed, this used to be a common fault caused by water getting in and corroding the contacts, now they mostly last the life of the car. I would still get it checked as I once had a wiring issue down the front.