Well that was weird!

martyboy

martyboy

Registered User
Joined
Feb 20, 2009
Messages
532
Reaction score
21
Points
18
Location
Scotland
Website
www.bebo.com
Just drove home from work at a nice leisurely pace, and parked up at my house, when I turned the ignition off I could hear what I imagine was the fan still going so I sat for a couple of minutes and it was still going so I got out to make sure it was my car and not roadworks or something over the wall, and yes it was coming from under my bonnet, and there was an awful smell of burning!
I got back in the car and started it up, then off again the noise stopped and eventually the smell of burning cleared!
Any ideas what might be going on here? A trip to dealers sounds on the cards!
 
Assuming its a diesel it could well be DPF regen, it pretty much burns off the soot, so I imagine it might smell of burning.
 
  • Like
Reactions: martyboy
It is the dpf regen - had that on my previous A3 and friend has it on his current 8v.

I don't have that worry no more as have the COD engine (so just smells fishy).
 
  • Like
Reactions: glospete, madrussa, Scott and 1 other person
As the guys say, if diesel that's the DPF, if it isn't diesel then maybe a trip to the dealer.
Normally the regen happens when you're driving so you don't notice it but sometimes you catch it out and stop the engine just as it's started and it has to continue until done. Always a bit disturbing the first time this happens!
 
  • Like
Reactions: martyboy
snakehips said:
Always a bit disturbing the first time this happens!
Click to expand...
I told my wife what to expect from the DPF regen. She was still surprised.

To be fair to her - the first time it happened on my Golf - I phoned my mate who was the service manager in the VW garage. He explained to me what it was, and said that the sales person is supposed to tell people what to expect. Initially, when I stopped the car, I thought there was a lorry somewhere beside me.
 
  • Like
Reactions: martyboy
This happens on my dads A6 too. Should of seen his face the first time it happened. A quick look on the net explained what it was so when it happens now he takes a good drive above 2k rpm and he says you can see the mpg going up as it clears the dpf out
 
  • Like
Reactions: martyboy
If it is revving higher than usual, eg 2k when you arrive at home, don't turn the car off. Go back out and just have a gentle drive. The car will be almost 900 oC under the engine bay which is why it needs cold air (fans breathing). Could cause some problems in the long run.
 
martyboy said:
Just drove home from work at a nice leisurely pace, and parked up at my house, when I turned the ignition off I could hear what I imagine was the fan still going so I sat for a couple of minutes and it was still going so I got out to make sure it was my car and not roadworks or something over the wall, and yes it was coming from under my bonnet, and there was an awful smell of burning!
I got back in the car and started it up, then off again the noise stopped and eventually the smell of burning cleared!
Any ideas what might be going on here? A trip to dealers sounds on the cards!
Click to expand...

Get used to it - its the regen, and it happens quite a lot. I don't like it one bit, particularly when it starts up as I pull into a busy carpark. I would say mine happens 1-2 times a week.

Your post is almost identical to the one I did about 6 months ago
 
Sorry to resurrect an old thread.
Is it best to leave the fan running when you stop or do as I have just done start the car and then switch it off?
 
Just to warn you, I don't know about Audi, but on the Vauxhall it just finishes the next time you drive the car. Warning part: If the DPF gets blocked or it's on the way to getting blocked, it will come up with a message saying "Keep driving", going by the book you then have to try and keep it over 2000 rpm whilst it's doing it's thing. When this warning comes up it logs it in the cars memory date, miles etc. so if you ignore it and just keep doing small runs and it breaks they know it's your fault and will hit you with the bill.

All you are doing while you keep driving is keeping it hot enough to burn all the cr@p off the filter. Short stop-start runs when you have a DPF are no good.
 
S32B said:
Just to warn you, I don't know about Audi, but on the Vauxhall it just finishes the next time you drive the car. Warning part: If the DPF gets blocked or it's on the way to getting blocked, it will come up with a message saying "Keep driving", going by the book you then have to try and keep it over 2000 rpm whilst it's doing it's thing. When this warning comes up it logs it in the cars memory date, miles etc. so if you ignore it and just keep doing small runs and it breaks they know it's your fault and will hit you with the bill.

All you are doing while you keep driving is keeping it hot enough to burn all the cr@p off the filter. Short stop-start runs when you have a DPF are no good.
Click to expand...

Thanks. I took it for a good run kept it over 2000 rpm all the way
 
Keep telling you all ...

Diesel = The devils creation :superman::hi:
 
First time you smell a DPF regen always makes you panic, they tend to smell less as the miles pile on though.
 
You must log in or register to reply here.

Similar threads

K
Well.. That didn't last long!
Replies
19
Views
3K
Ab2014
A
Bristle Hound
Well ?
Replies
22
Views
2K
Jassyo06
Jassyo06
S
Weird things..
Replies
0
Views
581
Sportback_GR
S
RSS-S3
Well thanks....
Replies
26
Views
2K
Jassyo06
Jassyo06
sparkymark75
Weird squeak
Replies
1
Views
621
sparkymark75
sparkymark75
Top
Back