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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black
Auxillary Tensioner / Idler pulley

Hi Guys,

DEFINITELY RESOLVED!!!

Replaced the tensioner and idler pulley today and the vibration and rattle has gone. I’ll probably replace the alternator pulley in the near future in case it may have been the main issue, but for now it’s sounding a lot better.


Over the past few months my 2014 SD4, 94000 miles has developed a quite worrying vibration/thumping./banging at low tick over. It is particularly loud when coming to a stop whilst still in drive but quietens when in neutral and disappears when driving.
I am hoping the video is clear but without 3 D sound it can be hard to pin point.

Initially I thought it was something loose and intended to investigate but when I checked everything in the engine bay all was solid. With the aid of my son we were able to establish it was coming from the area close to cylinder 1 on the left as you look from the front end but really am not sure what or how is the cause.
A mechanic at my local more trusted indie wasn't sure either but ruled out timing belt or pump as it wasn't coming from that area. Another Land Rover mechanic said it sounded as though it involved the area where cams and springs are located but didn't seem too concerned as it was costly to repair but wouldn't be high on the agenda as it wasn't an issue as cost to fix would be quite high.

We're heading off in a few days time to the Lake District towing a caravan and have to admit it is concerning but if anyone could shed some insight of thoughts to give me peace of mind it would be appreciated. But its a case of carry on regardless or sit tight and cancel our holidays until after a further inspection can be carried out... in November...

It appears I have forgotten how to upload pictures to the thread... Censored


Last edited by O-B-Wan003 on 22nd Oct 2024 5:40 pm. Edited 3 times in total

Post #444451 2nd Sep 2024 1:07 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

https://youtube.com/shorts/dgRl9F8HnU0?si=hGnHi07s8LW-4AZW

Post #444452 2nd Sep 2024 1:13 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

Post #444453 2nd Sep 2024 1:14 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 4947

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

OK have seen the video now. Sounds like exhaust blowing. But I cant orientate myself with the video - is that back or the front of the engine?. A zoom out and zoom in would help.

I'd take the engine cover off and repeat the inspection. Loose injector can make an awful sound too. Jules

Post #444454 2nd Sep 2024 1:16 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

Jules, was kinda thinking it was injector related but not confident with a self diagnosis Laughing
The engine cover has been removed so what your looking at is the rubber cover on top of the injectors but if you're looking at it from the from offside headlight if you get me. Just a quick photo sorry pointing to the area but without the engine cover removed.



Post #444456 2nd Sep 2024 1:42 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 4947

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

The EGR unit is just below that area, and turbo below that, and I wonder if there is an exhaust leak.

Without a close inspection is difficult to be more precise.

Id take the cover off again and the rubber insulator and have a good listen and feel around. Jules


Last edited by jules on 3rd Sep 2024 7:25 am. Edited 1 time in total

Post #444459 2nd Sep 2024 3:33 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

Thanks Jules, I'll have a go at it tomorrow when the weather improves. Don't recall any exhaust fumes or sign there was a blow out but will check and see if there's anything loose and possibly a better video. Also the possibility of a loose or outgoing injector.

Post #444463 2nd Sep 2024 6:43 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 4947

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

Perhaps Im not hearing what you are.
Locating the source of sounds can be frustrating Im afraid.

Earlier this year I was fairly sure my rear diff was whining - but it was the tyres. Jules

Post #444471 3rd Sep 2024 7:43 am
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black
Finally found the cause of the rattle...





Is this the idler pulley or tensioner? This appears to be the cause of the rattle/judder at low revs.

I'm now wondering if this could fail at any stage as we will be towing the caravan a few hundred miles dow to the Lake District on Thursday..

Post #444480 3rd Sep 2024 7:17 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

https://youtube.com/shorts/0JUZq-SWTE0?feature=share

Post #444481 3rd Sep 2024 7:19 pm
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I Like Chips



Member Since: 25 Jun 2017
Location: Ascott Under Wychwood
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United Kingdom 2011 Freelander 2 SD4 HSE Auto Indus Silver

I had to replace one of my idler pullies about three years ago, fine up to a few weeks ago when I changed my belts and the gubbins

Post #444483 3rd Sep 2024 7:53 pm
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Bluebird1999



Member Since: 05 Jan 2017
Location: Cumbria
Posts: 99

United Kingdom 2014 Freelander 2 TD4 SE Manual Santorini Black
Re: Finally found the cause of the rattle...

O-B-Wan003 wrote:




Is this the idler pulley or tensioner? This appears to be the cause of the rattle/judder at low revs.

I'm now wondering if this could fail at any stage as we will be towing the caravan a few hundred miles dow to the Lake District on Thursday..



The pulley on the alternator could be causing that, it has a one way slipping clutch that prevents the belt whipping on deceleration.


https://www.freel2.com/forum/topic40119.ht...tor+pulley 64 plate TD4 SE Santorini Black
2021 Mazda MX5 GT Sport Tech

Post #444484 3rd Sep 2024 7:59 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

Thanks Bluebird, very much appreciated for the link. Looks like I’ll be busy on our return from holiday. Just hope it gets us there and back again 😂

Post #444485 3rd Sep 2024 8:08 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 4947

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

That slapping of the belt on the tensioner pulley is very characteristic of a worn overun alternator pulley (OAP) - it works like a freehub on a bicycle - allowing the alternator to continue to spin fast when the engine slows down. When the OAP fails it drags the alternator down and puts a lot of extra tension in the belt causing the tensioner pulley to jump about . The OAP is easy to test with the AUX belt off.
You need a special tool (not expensive) to remove it from the alternator though - to hold the alternator shaft and turn the OAP separately.

M10/33teeth tool



The idler and tensioner pulleys are easy to replace (ive just done mine). Jules


Last edited by jules on 4th Sep 2024 6:26 pm. Edited 1 time in total

Post #444488 3rd Sep 2024 11:51 pm
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O-B-Wan003



Member Since: 12 Sep 2017
Location: county Down
Posts: 125

United Kingdom 2014 Freelander 2 SD4 HSE Auto Santorini Black

Jules, very much appreciated! Thumbs Up
When I did a search on the web Scott and Alana popped up with a video on the exact same thing. Doesn’t appear to be overly difficult just a few points where attention needs to be paid.
I’ll order the parts and hopefully get it sorted on return from our hols.

Post #444490 4th Sep 2024 4:29 am
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