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Model specific boards => Golf mk4 => Topic started by: Jin_C on 18 May 2012, 10:39

Title: Whirring helicopter sound
Post by: Jin_C on 18 May 2012, 10:39

Hi all,

It seems like there is always something in the way of getting my remap. Been put off for 4 months now!

So I am now getting a helicopter sound (I actually thought there was a helicopter above when it first started) which is getting worse and is now louder and turned into a sort of whirring.

It only happens when I am in gear doing 30mph-ish with foot off accelerator. It stops as soon as soon as I press accelerator or press the clutch in. It does sound like its coming from the front left but I'm not 100% certain (there is only so much moving around the cabin you can do while trying to drive!)

Any help would be appreciated.

Title: Re: Whirring helicopter sound
Post by: Yohan on 18 May 2012, 10:46

Is it a grinding/rumbling sounding helicopter?

Title: Re: Whirring helicopter sound
Post by: Jin_C on 18 May 2012, 10:53

No, it doesn't sound like grinding and I can't feel any rumbling, I'd say its higher pitched than rumbling.

Yohan you are my hero! You helped me out with my blocked cat issues posted on mkivs!

Title: Re: Whirring helicopter sound
Post by: Dalo Harkin on 18 May 2012, 12:19

mine does this if you have one of the rear windows down on the motorway  :grin:

gearbox or clutch I would say

Title: Re: Whirring helicopter sound
Post by: rio_gti on 18 May 2012, 13:10

can you get a vid up??

Title: Re: Whirring helicopter sound
Post by: Povey on 18 May 2012, 13:18

Could it be a thrust bearing?

Title: Re: Whirring helicopter sound
Post by: madhead1987 on 19 May 2012, 12:57

Might soy stupid I had this other week turned on to be gearbox mount bolts had snapped worth a look if u already haven't already

Title: Re: Whirring helicopter sound
Post by: harlemex on 19 May 2012, 13:17

Quote from: madhead1987 on 19 May 2012, 12:57

Might soy stupid I had this other week turned on to be gearbox mount bolts had snapped worth a look if u already haven't already

you need to sober up mate.  :laugh:

Title: Re: Whirring helicopter sound
Post by: EsSeX dAn on 19 May 2012, 13:24

does it get louder when you go round a corner? is so itll be wheel bearing. if its louder on left hand bends itll be a right wheel, louder on right bends itll be a left wheel due to weight change etc. hope u get it sorted!

Title: Re: Whirring helicopter sound
Post by: Jin_C on 19 May 2012, 13:30

I've just fitted THS engine mounts with new bolts and the noise was there before fitting so I doubt it will be that. But will try and check.

I can also hear it very faintly when at standstill with the clutch up. When I press the clutch down the noise dies off after a second.

The car has a G60 flywheel and VR6 clutch with a new release bearing installed around 5k ago.

I will try and get a vid up but the cabin noise may drown out the sound with my phone mic.

Does this sound like a gearbox issue, I really dont want to have to buy and install a new one

Title: Re: Whirring helicopter sound
Post by: harlemex on 19 May 2012, 14:55

clutch up would be input shaft bearing.  :sad:

Title: Re: Whirring helicopter sound
Post by: Jin_C on 21 May 2012, 12:38

So I'm assuming it is worst case scenario and I need to replace my gearbox. I spoke to VW, gave them my chassis no and they told me I have an ECW gearbox and it should have 108mm driveshaft. (is this the same as driveshaft flange?)

I've done a bit of Googling and another post says that the drive shaft flange is 100mm.

Can anyone tell me if I have to go for another ECW or I could also go for an ENJ since they have the same ratios

Thank you