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Model specific boards => Golf mk5 => Topic started by: andrewparker on 18 September 2008, 08:42

Title: Knocking/Tapping Noise
Post by: andrewparker on 18 September 2008, 08:42: Hi all, over the past few weeks I've noticed a tapping/knocking sound that appears to be coming from over by the passenger air vent. It only ever lasts a few seconds a generally happens when I've got the fan on low and quite often when the car is stationery.

I was wondering if anyone else had experienced this or if anyone knows what it is?

AP
Title: Re: Knocking/Tapping Noise
Post by: WhiteGTI on 18 September 2008, 08:53: Yeah I have that noise too - had it since new. Don't know what it is though, has never caused a problem for the car either...

Would be interested to find out what it is!
Title: Re: Knocking/Tapping Noise
Post by: Rollini on 18 September 2008, 09:19: i get this very occasionally but just assumed it was something to do with the aircon "warming up" but i'd be interested to see if someone knows what it actually is
Title: Re: Knocking/Tapping Noise
Post by: DanGB on 18 September 2008, 09:57: Its a very common thing with the VAG dual zone climate. On rare occasions it maens the pump or something is failing, but most of the time its a completely normal characteristic. It does it ALOT with mine.
Title: Re: Knocking/Tapping Noise
Post by: potster on 18 September 2008, 10:00: Mine too, dealer advised it was normal
Title: Re: Knocking/Tapping Noise
Post by: andrewparker on 18 September 2008, 10:07: Ha ha, normal?!

Yet again, VW build quality disappoints!
Title: Re: Knocking/Tapping Noise
Post by: joesgti on 18 September 2008, 10:09: i have it aswell :smiley:
Title: Re: Knocking/Tapping Noise
Post by: DamoGTI on 18 September 2008, 10:17: My S3 used to do it, nothing to worry about.

She is just saying good morning to you!!
Title: Re: Knocking/Tapping Noise
Post by: Teutonic_Tamer on 18 September 2008, 12:29: A job lot of loose screws?! :huh: :grin:

Seriously, is it roughly about three knocks - more "plastic" rather than "metalic" sounding? I get that too! :rolleyes:
Title: Re: Knocking/Tapping Noise
Post by: Cooper7 on 18 September 2008, 15:21: I think it is something to do with the air-con redirecting air through the different vents when the climate control is on auto
Title: Re: Knocking/Tapping Noise
Post by: Saint Steve on 18 September 2008, 15:24: pollen filter or Air con presurising???
Title: Re: Knocking/Tapping Noise
Post by: Teutonic_Tamer on 18 September 2008, 15:56: Quote from: Cooper7 on 18 September 2008, 15:21
I think it is something to do with the air-con redirecting air through the different vents when the climate control is on auto

I tent to agree with that. Probably the little servo motors adjusting all the relevant flaps and whatnots.
Title: Re: Knocking/Tapping Noise
Post by: Teutonic_Tamer on 18 September 2008, 15:58: Quote from: Phil Mcavity on 18 September 2008, 15:24
pollen filter or Air con presurising???

Shouldn't be either. The pollen filter is quite a snug fit, though the retaining cover could be loose, but then that is more down in the footwells on the passenger side. And the air con should be permanently pressurised, shouldn't it? :undecided: