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Mac87

Member Since: 06 Nov 2013
Location: Kent
Posts: 64

TD5 turbo whistle

Since I've had it my turbo has hissed rather than whistled, but has always worked fine and is all intact inside. However I gave her a real thrashing for a few minutes the other day and there was a bit of a burning smell which quickly passed.

Now in the turbo range theres a whistle along with the 'normal' hiss. The only way i can really describe the whistle is that it sounds like the turbo on a Navara, quite low pitched. No real difference in performance though, any pointers of what to maybe check?

Cheers

13th Sep 2014 1:53pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5805

2006 Defender 110 Td5 USW Zermatt Silver

Mine always whistled well. Always driven hard and I sold it at 167thou miles. So maybe you've done some good by giving it a good clear out.

Andy

13th Sep 2014 6:02pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6127

Usually (on the Td5's i've played with) if there's an exhaust stud (or two) snapped off, the turbo will blow by the manifold and cause a whistle.

you can usually tell by the black soot mark, but sometimes it's the end studs that are under the heat shield, so you can't see it.

13th Sep 2014 6:41pm

BigM

Member Since: 12 Nov 2011
Location: Nairobi
Posts: 36

1985 Defender 110 300 Tdi HCPU Auto Bonatti Grey

Hi

For the last week I began hearing a distinct hiss added to the turbo whistle. Verdict: cracked inlet manifold gasket.

13th Sep 2014 9:34pm

Mac87

Member Since: 06 Nov 2013
Location: Kent
Posts: 64

I was kind of hoping that the thrashing would have done her some good! I can't see any signs of soot etc so will just monitor it for the time being. Next to find out why my MAF sensor keeps failing, 3 genuine ones in 3 months!!

14th Sep 2014 11:17am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5805

How do you know they have failed?
Have you returned them to dealer? I did and got refund.
Do you have a snorkel?
I ran Alive uprated (but cheaper) ones on my Td5
To check for manifold warp try tightening the two pairs of studs at the far ends of the manifold. When mine went it was not a low pitched whistle, quite the opposite, very high, more like really bad belt slip.

Andy

14th Sep 2014 11:29am

Mac87

Member Since: 06 Nov 2013
Location: Kent
Posts: 64

Yup, back to dealer each time as the part is guaranteed. Takes 10 seconds to get any engine power when its turned on while its searching for the MAF then reverting to default setting. No snorkel, and only a stage 1 map.

Cheers will go and see if i can nip them up this afternoon.

14th Sep 2014 11:36am

barbel jim

Member Since: 12 Dec 2012
Location: Northants
Posts: 1432

Another advocate for Gary's(Alive) uprated MAF

14th Sep 2014 3:25pm

RoadForce

Member Since: 17 Jul 2014
Location: Holland
Posts: 340

2000 Defender 130 Td5 HCPU Coniston Green

So, just for my piece of mind:

a whistling sound from the turbo when accelerating is no cause for concern?

Mine whistles, but no hissing or whining noises. All good then? Defender 130 HCPU Td5 MY2000

29th Oct 2014 8:25am

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