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Author Topic: 2.2 TDI turbo whine? is now much louder than before  (Read 257 times)

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John-Ha

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2.2 TDI turbo whine? is now much louder than before
« on: 24 May 2018, 17:55:07 »

I searched with turbo whine but nothing seemed too relevant ...

I have always been able to hear a little turbo whine noise but it has recently become much louder and very noticeable.  Even t'missus now notices it and I'm always looking over my shoulder to see how far away the flashing blue lights are :(.

1.  If I rev the engine while in neutral I do not hear it, even at 2500 RPM.

2.  When driving, the turbo whine seems to start at about 1200-1500 RPM and gets louder and changes frequency as the revs increase. 

3.  I think that the car is somewhat perkier and I am getting more torque at lower revs than usual.  Previously the turbo it didn't seem to do much until ~2000 RPM but it is now giving me more torque at 1500 RPM.

51 reg, 83,000 miles.

All thoughts will be appreciated.
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GrahamT

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Re: 2.2 TDI turbo whine? is now much louder than before
« Reply #1 on: 24 May 2018, 18:25:18 »

If you really are getting more boost (going faster at lower rpm) then maybe your waste gate is sticking shut.

I'm not an omega diesel expert though.
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ajsphead

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Re: 2.2 TDI turbo whine? is now much louder than before
« Reply #2 on: 25 May 2018, 07:32:38 »

Do you have any holes in the exhaust pipe, particularly near the front end. The box under the driver's seat is often a good candidate ?
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John-Ha

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Re: 2.2 TDI turbo whine? is now much louder than before
« Reply #3 on: 25 May 2018, 11:24:38 »

Many thanks for your suggestions. 

I also have the dreaded "Low beam Fld/Vision" error message so, once the weather is better, I'll crawl under it to have a look at both problems.
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John-Ha

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Re: 2.2 TDI turbo whine? is now much louder than before
« Reply #4 on: 08 June 2018, 15:42:19 »

It went into the garage for something else and they could not find any cause for it - the waste gate was OK and no holes in the exhaust.  They suggested that I just live with it ...
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ajsphead

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Re: 2.2 TDI turbo whine? is now much louder than before
« Reply #5 on: 08 June 2018, 18:44:44 »

I tend to agree. If it's boosting fine then it probably is fine. If you really want to take all the oil pipes off, clean them, check the spindle for excess play and also check all the grommets in the bulkhead to see if one has dislodged then by all means do. Otherwise I'd live with it.
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Raeturbo

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Re: 2.2 TDI turbo whine? is now much louder than before
« Reply #6 on: 09 June 2018, 01:00:40 »

Leave it alone until it gets worse,
I have one here if you are going
To need a new one. If it starts to
Smoke stop using it as it may
rev itself to death on engine oil.
Nevef know could last for a while
But keep an eye on it, donít let it
Go too bad.

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