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Old 19-04-12, 09:05
LEWI Euskadi LEWI Euskadi is offline
Van Man
 
Join Date: Sep 2011
Location: Bristol
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T5 Post Icon T5 Turbo gone bang!!!

Morning, hope somebody can help...

We have a 2006 1.9TDi 104 T5 with a lowly 76,000 on the clock and the turbo disintegrated yesterday...my local garage stripped all "bits" out and the feed and return pipes are gunged up with oil etc.

My question is, has anybody got any idea's how the pipes may have got blocked??????

From reading other posts here, all the normal things like power loss etc were non existant, i.e. no power loss or for that matter normal mode all the time, started him and then drove down the road, pulled away from a roundabout, heard a little bang and the the engine started whistling, thought it may be a turbo pipe loose or split.

The turbo itself both sides, the steel and ceramic vanes disintegrated!!!!!

I am at a loss how this has happened and would like to know your views...

Thank you

Lewi
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Old 19-04-12, 12:03
tobes49 tobes49 is offline
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Join Date: Jul 2010
Location: In my T5
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Default Re: T5 Turbo gone bang!!!

Cheap/wrong oil and not letting the turbo cool down is the main reason for the pipes blocking.
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  #3  
Old 19-04-12, 12:30
LEWI Euskadi LEWI Euskadi is offline
Van Man
 
Join Date: Sep 2011
Location: Bristol
Posts: 18
Default Re: T5 Turbo gone bang!!!

Thank you for that, as far as am aware the oil has been the right type throughout its life, not sure on cheapness though....

Could you tell me how I would go about letting the turbo cool after a drive???

Many thanks

Lewi
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Old 19-04-12, 17:05
and1145 and1145 is offline
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Join Date: Feb 2011
Location: Howden, East Yorkshire
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Default Re: T5 Turbo gone bang!!!

Quote:
Originally Posted by LEWI Euskadi View Post
Thank you for that, as far as am aware the oil has been the right type throughout its life, not sure on cheapness though....

Could you tell me how I would go about letting the turbo cool after a drive???

Many thanks

Lewi
Let the engine idle to allow the turbo to spin down. Killing the engine straight away from a speed or laboured drive stops the oil feed to the turbo causing oil starvation. Some jap performance cars have turbo timers fitted to automatically stop the engine after 30 secs or so when the ignition is stopped.
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Old 19-04-12, 19:06
SCOTtdi SCOTtdi is offline
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Location: portsmouth
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T5 Post Icon Re: T5 Turbo gone bang!!!

Did it go pop just after changing gear?. I had an audi A3 do that, the variable vanes in the turbo jammed,causing an over boost, the pop was the seals going, no oil equals destroyed turbo!
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Old 19-04-12, 19:18
N2-UK N2-UK is offline
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Join Date: Oct 2010
Location: Lichfield - inside Turbo Turtle
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Default Re: T5 Turbo gone bang!!!

AIUI stopping the engine immediately after a fast run causes the remaining oil in the turbo bearings to carbonize due to extreme heat. Sitting there with the engine running for a while allows a flow of oil through the turbo to assist in cooling it down.


It doesn't stop the passengers asking me what I'm doing just sitting there with the engine idling EVERY TIME we pull up after a journey.

You'd think they'd have got the idea by now.
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Old 19-04-12, 19:40
LEWI Euskadi LEWI Euskadi is offline
Van Man
 
Join Date: Sep 2011
Location: Bristol
Posts: 18
Default Re: T5 Turbo gone bang!!!

Quote:
Originally Posted by SCOTtdi View Post
Did it go pop just after changing gear?. I had an audi A3 do that, the variable vanes in the turbo jammed,causing an over boost, the pop was the seals going, no oil equals destroyed turbo!

Hi Scot, yes it may well have been a pop, it certainly wasn't loud.....both inlet and exhaust pipes are more or less blocked hence the damm thing disintegrating

Thank you

Lewi
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  #8  
Old 20-04-12, 16:20
parafanaylya's Avatar
parafanaylya parafanaylya is offline
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Join Date: Oct 2008
Location: Johannesburg
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Default Re: T5 Turbo gone bang!!!

Good practice is to slow down a few minutes before stopping and drive off-turbo.

Local ambient temps here frequently exceed 90 deg. My van is fitted with a factory cooler for after shut down, and I am still running same from new 243000km
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