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Author Topic: Very loud fan noise  (Read 10525 times)

Offline em2evol

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Very loud fan noise
« on: May 20, 2009, 12:28:36 pm »
Hi guys

I've noticed this on my GTI for a while now - when I turn the engine on, about 30 seconds later it starts sounding like an aeroplane because the big fan comes on full pelt! This happens with both a cold and hot engine. Is it normal?! It's really really loud, and the smaller fan next to it doesn't seem to move... The noise stops / fan slows down when I start going but then comes on again periodically...

Cheers

Em
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Offline snapey

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Re: Very loud fan noise
« Reply #1 on: May 20, 2009, 12:34:26 pm »
Doesn't sound right that doesn't  :confused:. I've only ever had mine kick in once after a seriously long blast on the way back from work for about 15 miles or so.
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Offline joesgti

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Re: Very loud fan noise
« Reply #2 on: May 20, 2009, 12:34:30 pm »
its a known fault on the mk5 gti, mine also does it as im sure about 50% of the cars on here do it, i remember TT posting something about it about a year ago on the old site. i think its a big fix.

sorry i cant be of anymore help
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Offline GTIjames

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Re: Very loud fan noise
« Reply #3 on: May 20, 2009, 12:40:27 pm »
yeah happened to mine, is to do with the small fan not working any more and the large fan comes on to compensate.

sounds like your car is about to take of

take it to the dealers tell them thats the prob and will replace both the fans for you all under warranty, did it in a day for me.
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Offline joesgti

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Re: Very loud fan noise
« Reply #4 on: May 20, 2009, 12:45:23 pm »
what if no warrenty?,
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Offline Top Cat

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Re: Very loud fan noise
« Reply #5 on: May 20, 2009, 01:22:19 pm »
Quote from: joesgti on May 20, 2009, 12:45:23 pm
what if no warrenty?,

Ear plugs  :rolleye:
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Offline joesgti

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Re: Very loud fan noise
« Reply #6 on: May 20, 2009, 01:41:26 pm »
 :P :P

so what parts actually need replacing? the small fan motor?
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Offline Jaywoo-GTI

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Re: Very loud fan noise
« Reply #7 on: May 20, 2009, 02:28:15 pm »
Didn't there used to be a modification you could do on the mk4 golf for a problem similar?
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Re: Very loud fan noise
« Reply #8 on: May 20, 2009, 03:55:45 pm »
i have the same problem, and my car is out of warranty, so I'll keep an eye on this thread.  :happy2:
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Offline Jaywoo-GTI

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Re: Very loud fan noise
« Reply #9 on: May 20, 2009, 04:10:10 pm »
Here is the link for the Mk4 problem, Might be the same for the Mk5?

http://website.lineone.net/~alan.james.lorely/fan%20mod/Repair.html
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Offline em2evol

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Re: Very loud fan noise
« Reply #10 on: May 21, 2009, 12:23:15 pm »
Thanks for all your responses guys, glad to see I'm not the only one who's experienced this!

So now I know it's pretty common, the obvious question is will there be any long term implications to just leaving this problem as it is? My car's been out of warranty for a while now so no chance of it being a cheap fix I doubt...

Will look into costs etc of fixing though and let everyone know what I find   :wink:

 :happy2:
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Offline JPC

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Re: Very loud fan noise
« Reply #11 on: May 21, 2009, 12:30:42 pm »
mine does this, its not a GTI but its 6 months old, today infact!
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Offline joesgti

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Re: Very loud fan noise
« Reply #12 on: May 21, 2009, 12:37:05 pm »
Quote from: JPC on May 21, 2009, 12:30:42 pm
mine does this, its not a GTI but its 6 months old, today infact!

its a common fault on all mk5's  :happy2:

i dont think its a major fix, maybe just a new small fan?  :confused:
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Offline JPC

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Re: Very loud fan noise
« Reply #13 on: May 21, 2009, 12:39:43 pm »
its probably some capacitor thats failed!
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Offline Edition30

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Re: Very loud fan noise
« Reply #14 on: May 21, 2009, 12:57:27 pm »
Mine started doing it after the trial remap. Kicks up pretty loud then kind of dies out, that not even on a long journey so it cant be overheating.


Booked in for a service on the 29th of this month and also my aircon and centre caps need sorting on warranty so I will get them told about the fan aswel and let you all know what they do to sort it  :happy2:
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