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Possible alternator failure?
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r4ff
 


Member Since: 30 Apr 2013
Location: York
Posts: 512

United Kingdom 2005 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3
Possible alternator failure?

I'm getting a very nasty screeching/grinding noise from under the bonnet when I get to 1700 revs (was 2000 on the motorway last night, but today it's starting at lower revs Big Cry )

I had my dad rev the car with the bonnet up and fan cowling removed, and it seems to be coming from near the alternator. Can the bearings on the alternator fail but the alternator still charges the batteries? as I'm not getting any problems from the battery.

Cheers,

Matt.
 what is this life, if full of care?
we have no time to stand and stare.
 
 
Post #173284812th Nov 2016 5:49 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787

Ukraine 

Aux belt tensioner?
   
Post #173285512th Nov 2016 5:54 pm
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r4ff
 


Member Since: 30 Apr 2013
Location: York
Posts: 512

United Kingdom 2005 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3

how would I check that?
 what is this life, if full of care?
we have no time to stand and stare.
 
 
Post #173285712th Nov 2016 5:55 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787

Ukraine 

Don't know, just know that was what was causing my screeching. Sad
   
Post #173285812th Nov 2016 5:56 pm
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Disgoeshere
 


Member Since: 06 Dec 2014
Location: North East
Posts: 278

United Kingdom 2007 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

r4ff wrote:
how would I check that?


if it is the tensioner check this out

http://www.disco3.co.uk/forum/topic120970.html

also

http://www.disco3.co.uk/forum/topic82516.h...ator+guide

Good luck Thumbs Up
 Andy

07MY (8A) D3 2.7 TDV6 Manual SE

New oil pump, water pump, cam belt - DM
New prop, new clutch TVLR,Beanie Grille,Black & Silver Badges
All Filters, oil change,clock on dash,4x4 info,RLD Protector,silicone hoses
Front and Rear TRW low Dust dtec V8 brake upgrade,new oil sump 
 
Post #173286812th Nov 2016 6:13 pm
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gregj47
 


Member Since: 08 Mar 2014
Location: North Yorkshire
Posts: 45

England 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Hi r4ff
Just drop the alternator belt off and give it a spin , if it sounds noisy when you spin by hand you ve probably pinned it down Thumbs Up
  
Post #173288212th Nov 2016 6:36 pm
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r4ff
 


Member Since: 30 Apr 2013
Location: York
Posts: 512

United Kingdom 2005 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3

Will pop the belt off tomorrow and check. Need to drive back to Portsmouth tomorrow night so will have to hunt for somewhere open tomorrow for parts Big Cry
 what is this life, if full of care?
we have no time to stand and stare.
 
 
Post #173290412th Nov 2016 7:09 pm
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gregj47
 


Member Since: 08 Mar 2014
Location: North Yorkshire
Posts: 45

England 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Likewise with the tensioner give that a spin too Thumbs Up
  
Post #173294412th Nov 2016 8:03 pm
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r4ff
 


Member Since: 30 Apr 2013
Location: York
Posts: 512

United Kingdom 2005 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3

Cheers every one! I replaced the tensioner today Smile
Not only had it split, but there was several mm of play on the wheel as well, so no doubt it wouldn't have made the trip back to camp from York to Emsworth 0_0
 what is this life, if full of care?
we have no time to stand and stare.
 
 
Post #173378414th Nov 2016 2:05 pm
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