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Gearbox noise, TC or mech unit?
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Shottyman
 


Member Since: 13 Nov 2018
Location: Bedfordshire
Posts: 49

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
Gearbox noise, TC or mech unit?

I fitted a second hand gearbox not so long ago (old one had a TC vibration and one at 40mph)

New gearbox has cured the vibration at 40 and the vibration from the TC but now I have a noise like 2 metal plates grinding against eachother when I come off the throttle, or when I'm under very very light loads.

I have a spare mechatronic unit from the old box still that I have debated fitting in, incase the valves are sticking.

Sound like a possible cause or is it the TC on its way out again 😭 

Last edited by Shottyman on 21st Aug 2024 8:49 am. Edited 1 time in total 
Post #236169611th Feb 2024 1:22 pm
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loanrangie
 


Member Since: 18 Jun 2017
Location: Melbourne
Posts: 700

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

There is nothing on the valve body that can make noise, even the solenoids wouldn't be noticeable so swapping the mechatronic wont solve anything.  
Post #236178212th Feb 2024 5:41 am
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Shottyman
 


Member Since: 13 Nov 2018
Location: Bedfordshire
Posts: 49

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

i had a feeling that would be the case, me and gearbox's on this D3 are not getting on very well.  
Post #236192113th Feb 2024 2:25 pm
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Shottyman
 


Member Since: 13 Nov 2018
Location: Bedfordshire
Posts: 49

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

im desperetly trying to avoid the full overhauled gearbox price so im trying to be 100% sure its just the TC and not the g/gox itself.

i do alot of "slow" driving while im out pest controlling, i have also noticed that if im just idleing along in 1st, often down hill, i will get almost a jolt as though its trying to shift down a gear.

if i change the TC is there anything else worth changing while im there, i hear reports of input shafts wearing too so is it worth changing this along the way?  
Post #237557321st Aug 2024 8:53 am
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