DPF regen
- Thread starter spaceboy
- Start date
Unless you get the dashboard light just try and ignore it and let it do it’s thing. My 184FR used to regen every few days and at first it really played on my mind. If it started a regen while I was driving I’d go round the block a few times to let it finish. But after 2yrs and 20,000 miles I never had the dashboard light once so in the end I just learned to ignore it.
what loud noise are you talking of?
a regen doesnt make a loud noise.. unless perhaps you mean the fans are running?
a regen doesnt make a loud noise.. unless perhaps you mean the fans are running?
I think it also depends on your driving habits. If I get stuck in slow traffic, which is more often than not, it doesn't get it hot enough and therefore doesn't trigger a regen. But if it needs one and I'm able to have a spirited driving home, it will trigger. It would be good if it was able to let you know it had triggered one, as I'd carry on driving about until it had completed, rather than only knowing when you get home and notice the fan's on.
I have done 65k in my 184 and never had the DFP light on. Just ignore it running the fans when you park up. As long as you do regular ish long journeys you should be fine.
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The mk3 Leon doesn't bring on a light when it's doing a regen. Would be handy if it did though. Raised idle speed and the engine fan running is the signs to to tell you. If it doing a regen when I get to work or home I'll give it a few mins and blip of the throttle usually brings the revs down to normal idle and its good to turn off.
When running Shell or Esso's finest diesel, it tended to regen less than regular 'branded' fuel. Once I had to put supermarket fuel in, and right away it did a regen (possibly a coincidence).
It won't do a regen when the low fuel light is on so as soon as you filled it - it did the regen
It’s probably already performing regular passive regenerations while you’re driving on the motorway and you’re not aware of it, so there’d be no need to trigger additional regens during motorway driving, if it was possible to do so.
have we actually confirmed this is a DPF regen... the original post reads like we are making this assumption due to the noise coming from the car.... what sort of noise? i'm not aware the DPF regeneration will lead to any noise..
is the noise fans?
If it is DPF regen. then the following will lead to regular regens:
* short drives - cat never getting to sufficient temperature for effective passive regen.
(active regen will still be required, but less often if you drive on motorways etc)
* incomplete regens. - if it is the regen that's causing the noise when you stop and get out, whats happening if the regen has started but when you stop its not complete. so it will happen again soon. if it never gets the chance to complete it will go around and around in a circle of starting, aborting and then restarting again later. - so perhaps you are driving a typical distance that means the car only just gets to the right conditions for regen and you stop.
is the noise fans?
If it is DPF regen. then the following will lead to regular regens:
* short drives - cat never getting to sufficient temperature for effective passive regen.
(active regen will still be required, but less often if you drive on motorways etc)
* incomplete regens. - if it is the regen that's causing the noise when you stop and get out, whats happening if the regen has started but when you stop its not complete. so it will happen again soon. if it never gets the chance to complete it will go around and around in a circle of starting, aborting and then restarting again later. - so perhaps you are driving a typical distance that means the car only just gets to the right conditions for regen and you stop.
Oh, loud noise after parking up for 5 ish mins and stinky burning smell (was there a smell? I didn't read)...on a TDI is def a regen. Strangely sometimes even after doing highway speeds (70+mph) more than 30 mins with engine around 2300rpm mark for some periods of time, randomly it would sometime still do a regen once parked up. I thought I would have already passively burnt off whatever it had to burn off! Perhaps it was every certain mileage it would do it...regardless. All I know, when the active regen happens, the start stop won't work, and the revs are few hundred rpms higher than normal idle.
My current petrol car never once had fans running after parking up...
Forgot to mention over 2 years and 'only' 9k miles in those two year with mostly city driving (ok...very rarely were they 5-10 mins, more usually like 15-45 mins in the city) the light never once came on..
My current petrol car never once had fans running after parking up...
Forgot to mention over 2 years and 'only' 9k miles in those two year with mostly city driving (ok...very rarely were they 5-10 mins, more usually like 15-45 mins in the city) the light never once came on..
Don't believe it is mileage based - pretty sure it is DPF soot loading level that triggers it.
If you plug in VCDS or similar - you can see the soot loading level of the DPF in %
your highway drive may have just taken the DPF to the required soot level for a regen as you finished your journey.
It would be so helpful if they gave you a warning light or something to indicate a regen has started.
its definitely soot loading, then the right conditions to start the active regen.
Motorway miles, longer journeys, harder driving will all improve the passive regeneration, however this very rarely means an active is not required, it typically means less often. On the motorway you might not even notice it happening. (many people never notice it, you guys might as you are more aware than most)
It is definitely a failing of the system they there is no indication of a regen in progress, or even better a warning that one is coming up, even a countdown or a snooze option if you are approaching your destination. (or a 'window' of time where you can choose to activate it)
So frustrating to have completed a long drive tofind it regeneration 1 mile from home, or know you will go for a long driver tomorrow..
I'm sure somewhere along the line a decision or regulation was made that it had to be automated and not distract the driver.
Motorway miles, longer journeys, harder driving will all improve the passive regeneration, however this very rarely means an active is not required, it typically means less often. On the motorway you might not even notice it happening. (many people never notice it, you guys might as you are more aware than most)
It is definitely a failing of the system they there is no indication of a regen in progress, or even better a warning that one is coming up, even a countdown or a snooze option if you are approaching your destination. (or a 'window' of time where you can choose to activate it)
So frustrating to have completed a long drive tofind it regeneration 1 mile from home, or know you will go for a long driver tomorrow..
I'm sure somewhere along the line a decision or regulation was made that it had to be automated and not distract the driver.
I occasionally give mine a ‘hoon’ to ‘clear the pipes’ whether there’s any science to that or not I’ll never know but mine regens every so often and has been running like a dream since I got it.
Before anyone throws things at me, naturally my hooning doesn’t involve thrashing it from a cold start, I drive a long way to work and back so usually just do some harder accelerating and run higher through the rev range of the gear towards the end of my drive, all under the speed limit naturally
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Before anyone throws things at me, naturally my hooning doesn’t involve thrashing it from a cold start, I drive a long way to work and back so usually just do some harder accelerating and run higher through the rev range of the gear towards the end of my drive, all under the speed limit naturally
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The old school Italian tuneup does not work on the modern DPF equipped car.
To effectively clean a DPF now it needs relatively constant rpm 2200 to 2500 at a speed over 40mph
The Italian tuneup method would just put more soot in to the DPF
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