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Joel

Member Since: 18 Oct 2020
Location: Rotherham
Posts: 76

2002 Defender 110 Td5 DCPU Santorini Black

TD5 Squealing

Morning folks,

My TD5 has a squealing noise - seems to happen when accelerating, and then when you turn it off, there is a short squealing noise.

Is it likely to just be a belt, or could it be bearings in something?

6th Nov 2020 9:11am

nosnibod

Member Since: 15 Aug 2007
Location: West Midlands
Posts: 370

1998 Defender 110 300 Tdi SW Bronze Green

Short squeal will be the crank pulley - it has a rubber damper in it.

The long squeal on acceleration will most likely be an exhaust manifold leak - have a look around the edge of it for signs of soot. You’ll probably find a broken stud or two as well. Dave
Green Goddess - 1998 Defender 110 300tdi

6th Nov 2020 9:16am

ibexman

Member Since: 13 Dec 2008
Location: Essex
Posts: 2947

Exhaust manifold. Maybe

6th Nov 2020 9:17am

Joel

Member Since: 18 Oct 2020
Location: Rotherham
Posts: 76

nosnibod wrote:
Short squeal will be the crank pulley - it has a rubber damper in it.

The long squeal on acceleration will most likely be an exhaust manifold leak - have a look around the edge of it for signs of soot. You’ll probably find a broken stud or two as well.

Lovely. Do Defender TD5's suffer the same manifold warping as the Discoveries?

It does feel a little down on power sometimes, so i wonder if it is a manifold leak causing lack turbo.

Thanks.

6th Nov 2020 9:21am

nosnibod

Member Since: 15 Aug 2007
Location: West Midlands
Posts: 370

Yes they do, unfortunately. Depending on the size of the leak it could in theory reduce boost pressure. Main symptom when my old Td5 had the same problem was the whistle/squealing sound. Dave
Green Goddess - 1998 Defender 110 300tdi

6th Nov 2020 9:24am

jeffersj

Member Since: 23 Jan 2015
Location: Near Preston
Posts: 431

1996 Defender 90 300 Tdi HT Bronze Green

There is a good troubleshooting article in LRO International this month, especially warped manifolds and broken studs. Jeff
Ex 1968 Series 2A
Ex 90 TD5
Ex D3
Ex D4

6th Nov 2020 9:28am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5765

2006 Defender 110 Td5 USW Zermatt Silver

Check at either end of the exhaust manifold for soot or loose/broken studs.

6th Nov 2020 1:41pm

Joel

Member Since: 18 Oct 2020
Location: Rotherham
Posts: 76

I don’t think it’s manifold, I can’t see any obvious signs of an issue.

I am beginning to think it’s either belt related, or pulley / tensioner.

Seems to be worse after a bit of water, so am guessing a belt is slipping or a pulley bearings are shot.

20th Nov 2020 9:10am

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Drive Belt tensioner or idler or alt bearings are shot. remove belt and check each bearing

20th Nov 2020 9:48am

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