please can someone help i had my mk 8 re gassed today but he said the cooling fan comes on and basically stays on i can hear the clutch engaging etc all fine blows freezing cold air but fan stays on any ideas halfords had no idea [email protected]

Sorry can't help you bur there isn't currently a mk8 Fiesta. Do you mean a MK7?

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Sorry can't help you bur there isn't currently a mk8 Fiesta. Do you mean a MK7?

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there is google and my invoice when i bought the car says fiesta mk8 there is mk7 mk8 and mk9

No the current Fiesta is MK7.5 (the .5 implying that it's a facelift)

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The electronics on the fiesta are pretty complicated. Are you saying when you press for air con that the main fan in engine bay comes on and stays on or the fan in the car interior ?

The 2012 Mk7.5 Fiesta fan does stay on after the engines turned off if your using the air con.

no what im saying is when the engine is running and the air con is turned on the fan in the engine comes on and stays on if i run it for a hour the fan runs for a hour wondered if anyone might know what is wrong with it if i turn the ignition of then it stops :0)

Sounds about right mate. Cooling Fan does stay on when your using air con especially when it's warm. I'm sure it's normal behaviour mate.

thanks just in my old car the fan would come on then go of etc it would intermittently go of and on, with this car just stays on

I'll check mine later but I'm sure that how it works.

thanks mate massive help :0) dont want to take it to a garage and be paying silly money out my mate has a garage and he thinks it should come on and of and will be a sensor but i also know all cars are different good to meet someone with same car to see if it does stay on thanks again

Id totally expect that to be normal, mine does the same thing

Mine does the same (mrk 7) or 59 plate whatever it is.

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massive thanks to you all been stressing thinking whats wrong with it as im now seeing all of you with the same car it does the same thing :0)

As everyone has said plus I checked tonight.

I need to test this too. Seems odd to other cars I've had but maybe the air con radiator is small and needs cooling more so they decided to have fan on constant if using it.

The car is a strange beast electronically. I'd love to go to some seminar where a ford tech took you through all its oddities.

if the fan is on constant does this mean the compressor is on constantly what effect does it have on fuel efficiency. i always set the climate to auto which puts the air con on is the compressor running when not needed

The compressor is running all the time the a/c is on

Cjay1. Once on auto fan you can turn a/c off. This is generally how mine is set (and a few others on here) I then manually decide on the a/c side.

To be honest this setup is more suited to the colder weather where I'm generally only heating. I still manually work the a/c every couple of days to keep it operational or if damp to clear moisture.

I might revert to a/c being on all times in summer...will see, or might just stick to manually deciding.

thanks didn't realize the compressor was on all the time the ac light was on thought is was only on when actually cooling the car, will try switching it off. although i don't think it reduces mpg much as i'm currently averaging 47 mpg urban 88% cold engine average speed 16 mph which i think is fantastic compared to my old 1.25 fiesta which only averaged 36 mpg in same conditions.