Recently I have been hearing strange noises from under the bonnet but hadn't had much time to investigate. The car would also sometimes labour at low revs but then come right.

As I was driving home last week I heard a loud squeal from under the bonnet but then again the noise stopped and the car came right. Once home I popped the bonnet and I could see a rib off the belt.

I've now taken the aux belt and tensioner off and it has been well worn. Not that I am complaining after 173,000 miles, I think it's done rather well.

Going to fit a new dayco belt and tensioner when the parts come.

Change the idler as well. JLR say belt every 150k miles I just changed mine at 75k not worn at all BUT think you were lucky as there have been several cases where a failed Aux belt has got under the cam belt and caused catastrophic damage. 2013 FL2 XS.
Defender 90 300 TDi.
Defender 90 300 TDi CSW.
1964 MGB Roadster.
1944 Willys MB "Jeep" with bullet holes. (gone)
17 hand Irish Drought Thoroughbred (mostly lame)
Nagging Old Boiler.

Mahatma Gandhi said if there is an Idiot in power those who elected him are well represented. The Enemy is our own corrupt Government.

check the alternator overrun pulley too. Jules

Direct part numbers for parts would be nice to have =)?

alternator overrun pulley
Aux belt tensioner
aux belt

Should find them all here .

https://parts.jaguarlandroverclassic.com/p...4MTI3Ng../ 2013 FL2 XS.
Defender 90 300 TDi.
Defender 90 300 TDi CSW.
1964 MGB Roadster.
1944 Willys MB "Jeep" with bullet holes. (gone)
17 hand Irish Drought Thoroughbred (mostly lame)
Nagging Old Boiler.

Mahatma Gandhi said if there is an Idiot in power those who elected him are well represented. The Enemy is our own corrupt Government.

All done now and the car is sounding much better. It was easier than I was expecting. I watched the excellent video by forum members Scott and Alana before starting and thankfully the job went smoothly.

Compared to alot of the forum members on here, we haven't got a clue . But it's always nice to hear when one of our videos can be of some use . https://www.youtube.com/@scottandalana4x4