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Cooling Fan On All The Time


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#1 Focus_ST-3

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Posted 25 July 2010 - 01:03 PM

My cooling fan kicks in as soon as the engine is started and stays on all of the time. A few people have commented that it is also very loud! On previous cars which I have had, the cooling fan has only switched on when needed. Is this normal with the new Fiesta or is their a fault?
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#2 andy64

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Posted 25 July 2010 - 01:09 PM

Is your air conditioning turned on? Mine does this too - but only if the a/c's on, the Fiesta uses the same fan for the a/c condensor & engine cooling; unlike other cars which I've owned which have had separate fans.

#3 Mr Kipling

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Posted 26 July 2010 - 09:26 AM

Mine is on all the time too, could well be the A/C but it's not been an issue on other cars I've owned.
I drove 2 MK 7's before buying and they were the same, disappointing for a new car as other manufacturers keep the engine cool using normal airflow except when stuck in traffic.

#4 Ollie137

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Posted 26 July 2010 - 09:38 AM

i dont here my fan but i do hear a few clicks when a/c is on like every 30 seconds or so.
But my fan only kicks in when i put my foot to the floor.

#5 Focus_ST-3

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Posted 26 July 2010 - 04:11 PM

Thanks for the replies, i've tried turning the air-con off but the cooling fan still kicks in straight away after start up, must just be the design of the cooling system!

#6 Lenny

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Posted 26 July 2010 - 06:16 PM

Thanks for the replies, i've tried turning the air-con off but the cooling fan still kicks in straight away after start up, must just be the design of the cooling system!

I think your rite mate,It could be the internal design of the MK7 as the radiator is positioned behind the front sub frame which as you can see in the pictures is blocking half of the radiator wouldnít have been as bad had Ford positioned the cross beam at a 45 degree angle which would force the air thatís hitting it(whilst driving) downwards aiding the cooling more,Ford could also have put bigger holes in front support bar,doing a DIY job on it would probably void warrenty and jeopardise safety, Iíve never seen a radiator mounted behind such a large sub frame before although the plus side is theirs less chance of getting your radiator bust, if hit from the front and also the handling is improved due to the radiator being closer to the front axle reducing under steer, i got these pictures off e-bay some guy has broken down a full brand new 1.6TDI MK7 Fiesta Crazy :o

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#7 kevin lancelott

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Posted 26 July 2010 - 06:40 PM

Thats a strange thing to do by ford..........mine does not come on from the first turn of the key.And I have not actually heard it after I have switched off the engine unlike in my mk6. :huh:

#8 sussex

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Posted 26 July 2010 - 06:45 PM

my mk7 fan only on with the a/c

#9 andy64

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Posted 30 July 2010 - 08:12 AM

Thanks for the replies, i've tried turning the air-con off but the cooling fan still kicks in straight away after start up, must just be the design of the cooling system!

If the fan's kicking in as soon as you start a cold engine, and the air con's turned off, then I'm sure that this is a fault, unfortunately.

If the engine's warm when you start it, then the fan might kick in immediately - this is because the coolant heat will be concentrated at the top of the engine - due to lack of pump circulation - which is where the coolant temperature sensor's located.

But if, with the a/c off, the fan runs as soon as you start a cold engine, and / or the fan runs continuously, then I'm afraid that you do have a fault (sounds like a faulty temperature sensor) which will result in over-cooling of the engine = engine not reaching operating temperature = more wear & less MPG.

The only situation (with the a/c off) where my fan runs as soon as I start the engine is occasionally when the engine's already warm - & never when I start a cold engine.


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