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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5744
United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
A squeaky tale
Recently I noticed a squeak when the engine was running. Sounded like a idler pulley, but more around the tensioner area. Simples, order a new tensioner and job done. But no. Squeak still present.

I found a spare idler pulley and replaced that. Squeak gone. But....it came back about 50miles later.
Replaced the final idler pulley (twice, first one was faulty). Squeak still present.

Removed the viscous fan and started the car up, still squeaking.
Removed the belt. Squeak gone. But is it a pulley? The other pulley's seemed fine.

I remembered I spotted a spare belt in the shed from a few years ago. Decided to swap the belt.

So far, the squeak has gone.
Tomorrow is a good run up the M6 to J33 and around that area for the North West Stages Rally. This will be a good test to see what’s what. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #1029001 22nd Mar 2024 6:32pm
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Oldowner



Member Since: 26 Dec 2018
Location: South west
Posts: 602
United Kingdom 2007 Defender 90 Puma 2.4 HT Aintree Green
Inspect the squeaking belt - I have found rubber debris embedded in the valleys of the serpentine belt - the debris shows up as shiny strips, this seems to cause the squeaking as it runs over the pulleys. I got totally fed up with an old 300tdi that was used very rarely, but when used it would do 600 mile round trips, I replaced tensioner, alternator, water pump and front timing case, each time it would run quiet with a new belt for the first hour or so and then start squeaking again, every time caused by a build up of rubber debris in the belt.
I fitted new pulleys throughout to the existing ancillaries and it has run silently for the last six years- my theory is that the old worn pulleys had rust pitting from the lack of use of the vehicle, and the pitting caused abrasion to the belt and the subsequent rubber debris
Post #1029032 23rd Mar 2024 4:42am
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5744
United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
I have ordered a new belt as the old one I found was a few years old. Dayco belt on the way. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #1029150 24th Mar 2024 4:29pm
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Chriswb84



Member Since: 16 Sep 2023
Location: North West
Posts: 17
United Kingdom 1999 Defender 110 Td5 SW Coniston Green
Mine didn't look too bad, but one of the bearings on one of the pulley's failed on the M56, and it was a lift with the AA. I cant remember it costing a lot of money to replace all the pulleys, tensioner and belt. At the time I wish I had replace them sooner. Certainly cheaper than the additional miles charge by the AA to get home.
Post #1029228 25th Mar 2024 1:24pm
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M94PUMA



Member Since: 16 Dec 2016
Location: Hampshire
Posts: 104
United Kingdom 2005 Defender 90 Td5 CSW Tonga Green
Recent purchased td5 had a squeak when cold for the first 5-10mins and when turned off has the usual td5 chirp noise. I was 100% sure it was going to be the crankshaft dampener.
Thought I’d just re-fresh the belt, genuine tensioner, 2x new idler pulleys before spend big money on a genuine dampener..
Cold start engine squeak noise gone, result! And also the normal noise when turning off the engine when hot which I had money on being the crankshaft dampener.
Thumbs Up
Post #1030235 2nd Apr 2024 6:02pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5744
United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
New belt fitted and I think the squeal has now left the building! 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #1030323 3rd Apr 2024 8:22am
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2040
United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
Great news 👍

You’ll now be able to hear that ‘other noise’ that will drive you mad…
Post #1030346 3rd Apr 2024 10:44am
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5744
United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Yea there a few of them..... 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #1030347 3rd Apr 2024 11:41am
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