Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
Exhaust note change
Have noticed since getting D4 that occasionally the exhaust note changes to a much deeper one, almost as if aprt of the baffles have been removed. It is not like it all the time and appears to change after the car has been running for at least a few minutes. It would also appear to be getting more frequent.
Went out this morning, started car sounded normal, drove about three miles and could hear a marked change in exhaust note, much deeper/more of a roar whislt driving at a steady 50. Stayed like that for about 12 miles. Parked car and left for hour, came back and exahust note back to normal, drove home and stayed normal all way home.
Any ideas or any one had same issue.MY17 D5 1st Edition Namib Orange
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8th Sep 2012 2:34 pm
JonM
Member Since: 24 May 2012
Location: North Yorkshire
Posts: 1247
I've noticed something similar a couple of times. Usually when driving gently with a little bit of throttle applied e.g. 30mph up a gentle incline.
It sounds like I'm following a boy racer with a stupid exhaust on a corsa or something (except the sound continues after the boy racer has broken down ).
I can only hear it inside the car. If I open the windows for a better listen it sounds normal from the outside.
Could it be the DPF regenerating - would that make the exhaust sound different
8th Sep 2012 6:23 pm
Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
I wondered that but do not think so as I do not beleive the car is up to the required temperature.MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
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D4 camera club
8th Sep 2012 6:25 pm
InnuendoMaster
Member Since: 09 Oct 2011
Location: Whitstable
Posts: 384
I took mine back with regard to this noise, thinking my exhaust was blowing. Mine happens every now and then where the note definately gets deeper. With luck it happened whilst a technician sat beside me, and clearly he said the DPF on its cycle and it'll clear in a minute.........and it did
8th Sep 2012 7:11 pm
lm5370
Member Since: 21 Aug 2012
Location: Taiwan
Posts: 29
I have that as well, and I notice it after a high speed run usually. So the conclusion is that it is DPF trying to clean itself out?
Have exactly the same (posted previously about this) and it only happens when engine up to temp,and has been running at a steady speed (generally 60-70mph) for a few miles... then it sounds as if the exhaust has blown!! Would have been nice if the manual gave some hint of the issue
12th Sep 2012 8:59 pm
discofinnie
Member Since: 05 Sep 2012
Location: United Kingdom
Posts: 65
Ah, this explains the noise the other day, really thought i was going to have a new kitchen. I also guess this means that I have a DPF, my car is a 59 plate HSE that is called a TDV6 rather than an SDV6
Phew!!
29th Sep 2012 12:38 pm
mickyd4
Member Since: 26 Jun 2010
Location: North
Posts: 786
Mine does it too. Now its out of warranty, I was thinking i was about to get a huge bill for some huge mechanical failure... I thought, new exhausts or cats or more turbo issues 2023 Ineos Grenadier 3.0 Diesel Commercial
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29th Sep 2012 2:09 pm
Skarre
Member Since: 13 Oct 2016
Location: Österskär
Posts: 36
Thank god för this forum. I har the same thing happen just now. Nothing apparent to be seen when I stopped. Everything intact under.
Logged on here and did a quick search... phew... 8)
7th Jun 2017 4:31 pm
dgardel
Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
Exhaust note change when DPF regeneration start.....Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition IID Pro MV License
7th Jun 2017 4:56 pm
RDR
Member Since: 24 Mar 2013
Location: Derbyshire
Posts: 2260
Definitely DPF, my previous one got stuck in the cycle and it was burbling away for months I quite liked it until the dealer reset it MY06 S - Gone but not forgotten
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