Hello everyone,

New here so be gentle lol.

I have a 2010 FL2 with 155k on the clock, all was fine until an annoying vibration sound came from under the bonnet, at first I thought it was something plastic that had come loose but then I noticed the Aux belt tensioner was rapidly vibrating . Once removed it was obvious that the tension spring had snapped inside. Brilliant I thought found the problem. I ordered and fitted a new tensioner and aux belt , fired her up and all was ok for a day, fired her the next morning and the noise was back. I thought new tensioner had broke its spring but upon inspection all was found to be all good. Re fitted everything , fired it up all was ok for about a minute then the noise was back then the noise would briefly go quiet then come back , now its continuous at low RPM , the noise fades and disappears as the revs increase as does the vibration from the new tensioner . I know concede defeat , all the other pulleys seem serviceable by hand but unable to test them with the new belt fitted and under load. Any ideas as to what might cause this would be greatly received and save my sanity. I am ex REME so have some mechanical experience with Land Rover.

The clutch on the alternator pulley has siezed. Take the belt off. You should be able to turn the alternator one way only. Turn it the other way and the pulley will 'slip'. If you can turn it both ways, you need a new pulley. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

Thanks for your fast reply. Your answer makes perfect sense , I shall investigate further in the morning. Watch this space.

please follow this though - mine has a odd noise as the engine slows down - wondering if its alternator of AC pulleys Jules

This link includes a good video of fan belt vibration. Most of the rest of it is about other noises/vibrations associated with the FL2.

https://www.freel2.com/forum/topic37187.html?highlight=alternator

Seizing of the Alternator Pulley seems to be a common problem.

https://www.freel2.com/forum/topic34499.ht...tor+pulley FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 77k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)

It’s not just FL2's that have that problem. Any motor with a serpentine belt and a spring loaded tensioner is susceptible to the alternator clutch/pulley seizing. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

jules wrote:

please follow this though - mine has a odd noise as the engine slows down - wondering if its alternator of AC pulleys

thanks Ian Jules

Well, was it the alternator clutch? Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

TALLYHO wrote:

Thanks for your fast reply. Your answer makes perfect sense , I shall investigate further in the morning. Watch this space.

I'm still watching.  Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

and the answer is ? . 2009 FL2 S now gone
2011 FL2 HSE AUTO
2012 FL2 XS AUTO
2000 Kawasaki er 5

42

Isn’t it nice when people return to the thread and let those that have helped know what the result was as well as those that may search for the same problem at a later date.  Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

Last edited by Boxa on 12th Jul 2024 8:06 am. Edited 3 times in total

Hello again everyone,

Sorry for the late reply still recovering from a heart attack I have to take things easier these days.

I still do my own spanner work as and when I can and I can confirm Steve D and everyone else that said the problem was the alternator clutch was the problem were 100% correct. What a palaver getting the alternator off though, not like the old days ten minutes . Anyway finally removed it and I just changed the faulty pulley, that was a piece of cake. I also had to change the tensioner and snake belt. Once everything was put back in its rightful place and final checks made it was fired up and I can honestly say it runs perfectly. So a massive thank you all for your time ,effort and diagnostic brilliance . Once again very sorry for the delay totally unintentional .