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Author Topic: Turbo Whistle... Possible Fault??  (Read 15939 times)

Offline Pullafacial

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Turbo Whistle... Possible Fault??
« on: May 24, 2010, 06:50:18 pm »
Hi guys, not sure if it's a problem or not but on the way to work today I noticed the following:
Whilst I had the window down under hard acceleration, the "whistle" noise from the turbo seems to gradually get louder then gets to certain point (around 3000 revs) and then suddenly drops right back.
It's almost as if it gets to a certain point then looses pressure or goes into safe mode or something??

Anyone experienced this before? Maybe that it's normal but i'm just curious.

Steve

Offline Nickyboy

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Re: Turbo Whistle... Possible Fault??
« Reply #1 on: May 24, 2010, 07:21:33 pm »
All gears? Mine does this in 2nd under normal acceleration, foot down hard and it struggles for grip. 3rd gear upwards it pulls all the way and whistles like mad  :driver:

Remapped?

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #2 on: May 24, 2010, 07:44:54 pm »
Happens in all gears and not remapped (although thinking about it!)

Steve

Offline Nickyboy

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Re: Turbo Whistle... Possible Fault??
« Reply #3 on: May 24, 2010, 07:47:01 pm »
But it still pulls as strong when the noise dies down?

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Re: Turbo Whistle... Possible Fault??
« Reply #4 on: May 24, 2010, 07:47:19 pm »
What turbo is it.?? k03 or K04.

K04 is alot more audible especially on throttle lift off.

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #5 on: May 24, 2010, 07:53:51 pm »
Still pulls but not as strong as when the whistle is louder.
Never been in another one so have nothing to compare it too.

Not sure what turbo, is there a way for a simpleton to tell?

Offline Nickyboy

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Re: Turbo Whistle... Possible Fault??
« Reply #6 on: May 24, 2010, 07:54:49 pm »
Do you have the standard GTI (K03) or the 30th anniversary edition (K04) ?

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #7 on: May 24, 2010, 08:34:19 pm »
Standard Gti so guess K03

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #8 on: May 26, 2010, 04:55:58 pm »
Hi guys, convinced myself I have a split DV so as I've only had the car a couple of weeks I'm gonna get it booked in at the garage. My only concern is it's not a main dealer but a general car sales place so hope it's covered!

Just a bit info on the fault, it's definately lacking power and the turbo whistle is really loud.
Also, seems to be worse under hard acceleration as a pose to gentle.

Thanks for your help so far and I'll keep you posted.....

Offline Top Cat

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Re: Turbo Whistle... Possible Fault??
« Reply #9 on: May 26, 2010, 06:17:53 pm »
Hi guys, convinced myself I have a split DV so as I've only had the car a couple of weeks I'm gonna get it booked in at the garage. My only concern is it's not a main dealer but a general car sales place so hope it's covered!

Just a bit info on the fault, it's definately lacking power and the turbo whistle is really loud.
Also, seems to be worse under hard acceleration as a pose to gentle.

Thanks for your help so far and I'll keep you posted.....

Sure does sound like a split DV.  :smiley:

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #10 on: May 26, 2010, 07:38:15 pm »
That's what I thought, on a positive note, seem to be getting 5 miles per gallon more since the problem started!

Offline pazz

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Re: Turbo Whistle... Possible Fault??
« Reply #11 on: May 26, 2010, 08:02:11 pm »
Whereabouts are you Pullafacial?

Its an easy job to swap the DV, about 4 bolts and a plug and your done.

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #12 on: May 26, 2010, 08:19:01 pm »
Hi Pazz, I'm in north Norfolk. Been searching for a guide for replacement but can't find one.
Is it easy to get to or does the car have to go up on ramps?

Steve

Offline shamrock

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Re: Turbo Whistle... Possible Fault??
« Reply #13 on: May 26, 2010, 08:46:54 pm »
what's a dv?

Offline Pullafacial

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Re: Turbo Whistle... Possible Fault??
« Reply #14 on: May 26, 2010, 08:57:32 pm »
From what I gather, dv stands for dump valve which is the component that disposes of used air from the turbo.
I could be wrong but I've put 2 and 2 together and that what I've come up with!