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MOT test - Held at high revs for over 3 minutes?!
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discostick
 


Member Since: 08 Nov 2012
Location: Kent
Posts: 331

United Kingdom 2005 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3
MOT test - Held at high revs for over 3 minutes?!

Had my MOT recently and for the first time I was seriously concerned as I sat in the waiting room.

The tester held the car at extremely high revs, the sound recording I made (as it went of forever!) sounds like upwards of 4000rpm for 3-4 minutes!? It was screaming. Then he dropped the revs and did several limiter hold tests.

It sounded like abuse and I was extremely concerned, I’ve never heard such a drama, was it required / necessary?

I didn’t get to talk to the tester. I did also see he was wearing wireless earphones…… was not happy.
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Post #237786221st Sep 2024 8:27 pm
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4540

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

From the .gov MOT guidance -

2500 rpm (or half max engine speed) 30 seconds

Click image to enlarge
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #237787922nd Sep 2024 8:24 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4540

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

No rev limiter testing is required. Very odd behaviour from your tester. I'd be upset too.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #237788022nd Sep 2024 8:25 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10736

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

certainly a petrol car would be tested as you describe.

Didn't realised they did diesels like that
  
Post #237790222nd Sep 2024 12:12 pm
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discostick
 


Member Since: 08 Nov 2012
Location: Kent
Posts: 331

United Kingdom 2005 Discovery 3 TDV6 S Manual Bonatti GreyDiscovery 3

Checked dash cam and i have good footage of it.

See video https://youtu.be/G7Qce-rJTRE

Revs held from 3:22 to 07:12 (3 mins 50s total)

Followed by 4x rev limiter throttles.

It honestly sounded horrific from the waiting room, i have never in all my 12 years ownership revved it so high.
 New Engine - Fitted with body on...

Developer of the FBH Smart Control Module - Keyfob 3rd button control + USB Diagnostics + remote status LED + priming + battery protection + water temp control setpoint (or fixed run time)

Group Buy: www.disco3.co.uk/forum/post1405044.html#1405044
Downloads: www.dropbox.com/sh/swqlepn6jdb7g5l/AAD5avF_KIexlhlQf4--kysZa?dl=0
FBH not Starting?: www.disco3.co.uk/forum/fixed-webasto-fbh-105563.html
E: d3discostick@gmail.com 
 
Post #237793522nd Sep 2024 8:31 pm
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1277

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Def sounds like he over did it. You’re lucky with the dash cam footage. Last
mOT my tester apologised for not plugging the dash cam back in. Apparently it’s procedure to un plug them as recording of MOT testing is a no no
 2008 HSE Stornoway Grey

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Post #237794823rd Sep 2024 6:11 am
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LRD4GAB
 


Member Since: 05 Nov 2020
Location: Tamworth
Posts: 505

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

I would certainly be reporting his behaviour Mad
  
Post #237794923rd Sep 2024 7:02 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
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England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

The only reasons I can think of for this are:

The vehicle had failed the emissions tests by a very small margin and the tester was giving it an Italian tune up to blow it through before retesting.

Or and this is terrible, perhaps it wasn't up to temperature and he was helping it along before testing.

Either way I think it needs investigating.
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Post #237796223rd Sep 2024 10:37 am
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kevofcov
 


Member Since: 06 Nov 2007
Location: Other end of M69
Posts: 571

England 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Java BlackDiscovery 4

LRD4GAB wrote:
I would certainly be reporting his behaviour Mad


Hmmm - I agree maybe a polite email to the boss at the garage
  
Post #237798323rd Sep 2024 5:37 pm
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