Climate Control / Air con problem?

Tom. · Post by **Tom.** » Tue Apr 08, 2008 3:15 pm

My girlfriend has just bought a Polo GTi, and I have noticed there seems to be a problem with the air con.

When you switch the air con on (by either setting the climate to 'AUTO' or turning 'ECON' off), as far as I am aware the engine fan should turn at a slow quiet steady pace to draw air through the air con radiator.

When turning this on in her car, the fan does not move, but after about 20 seconds it spins up to a fast audible pace for around 10 seconds and then repeats this process. This is not correct as far as I know?

Can anyone shed ant light on this and what parts needs replacing/cost etc?

Si_GTi · Post by **Si_GTi** » Tue Apr 08, 2008 5:36 pm

I've got the manual A/C controls so can't really help I'm afraid

But welcome to the forums and hopefully someone will be able to help with your problem soon!!

Cheers

polo_gti21 · Post by **polo_gti21** » Tue Apr 08, 2008 6:21 pm

mine does that aswell mate its nothing to worry about as far as i know. ive had my motor 4yrs and its been good as gold

Razz · Post by **Razz** » Tue Apr 08, 2008 6:29 pm

i get the same problem with my car, but mine starts to go at a fast pace even if i only jus turn on the climate control, even if i have it on 'hi' or just on the demister, as soon as i turn it on, i hear the fan go really fast for about 10 seconds and then come back on after like a few seconds, and it keeps happening, is this normal?

Kelk11 · Post by **Kelk11** » Tue Apr 08, 2008 10:34 pm

i thought it did this as it regulates the temperature so it is giving it a "boost" then settling back down. well thats my understanding. not had any problems with mine

Tom. · Post by **Tom.** » Thu Apr 10, 2008 10:25 am

I am pretty sure it is a relay or something, thought someone might know some specifics. It is a similar problem that happens on mk4 Golfs apparently. The fan should spin at a constant low speed to draw air through the air-con radiator as far as I know.

I am taking the car down to The Phirm next month for the cambelt, I'll get them to look at it as well.

Tom. · Post by **Tom.** » Thu Apr 10, 2008 10:26 am

Si_GTi wrote:I've got the manual A/C controls so can't really help I'm afraid

But welcome to the forums and hopefully someone will be able to help with your problem soon!!

Cheers

Thanks dude!

Bepe · Post by **Bepe** » Thu Apr 10, 2008 6:50 pm

i asume this is suppost to do this? as climate control basically keeps the interior of the car at a certain temperature so it will try and keep it at that operating temperature so will therefore make the fan faster/slower

Tom. · Post by **Tom.** » Sun Apr 13, 2008 8:24 pm

Bepe wrote:i asume this is suppost to do this? as climate control basically keeps the interior of the car at a certain temperature so it will try and keep it at that operating temperature so will therefore make the fan faster/slower

If it's the interior fan you speak of then yes, this does vary as it should.

But not the engine/radiator fan, this only operates when the air-con is on and should spin at a slow constant speed to draw air through the air con rad.

Bepe · Post by **Bepe** » Sun Apr 13, 2008 9:21 pm

i would of thought it would have the same effect as that then? wouldnt you? because i was worried, when i had just started the car the fan would kick in, i got worried, but i then realised it was because my air con was on lol

Tom. · Post by **Tom.** » Mon Apr 14, 2008 3:02 pm

Bepe wrote:i would of thought it would have the same effect as that then? wouldnt you? because i was worried, when i had just started the car the fan would kick in, i got worried, but i then realised it was because my air con was on lol

Well yeah, but the fan should turn on the instant you turn the air con on, not speed up to full speed as if the car was overheating after 20 seconds then stop