How far to clear the DPF

[Deano3]

Just a quick question I parked up at home yesterday and fan was still going after a bit research I read that is doing a regeneration it will continue to cool the engine down, I only got 6 miles to and from work on my 4 days in then when I am off 4 days do a lot of short journeys pottering around, every so often I will go further to caravan etc but mainly only shorter journeys, just wondering if I should go down motorway every so often to clear the DPF and should I go at 70mph for so long etc ?

No light or anything on but don't want it to come on either

Thanks dean

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[mrratty]

Every so often go for a 20+ mile blast and give it some welly.

A diesel isn't really the best engine for the miles you do

 

[niggle]

Give your ears a treat and chop the soot chucker in for a 1.8TSi.

 

[Deano3]

Every so often go for a 20+ mile blast and give it some welly.

A diesel isn't really the best engine for the miles you do

Will do this , tried to do again after work today so much be needed I think as fan was running again after work.

How often you think will require a run out ? You think just up motorway in 6th at 70mph would do it after engine been running and pottering around ? Will most likely do a regeneration whist driving around aswel so the run up motorway will clear it after its origional regeneration I imagine, I work 4 on and 4 off so will give a run out on Sunday 20 mile or so

Thanks again

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[Dt-spd]

There is no need to "give it some welly" just go for a slightly longer drive than you normally do on your daily work run. Maybe just take a slightly longer route home one day a week.

If you feel and/or hear it go into regen it's good practice to keep driving until it's finished. The idle RPM will be higher when in regen. When I notice this I just take a slightly longer route home to allow it to finish.

 

[andycupra]

cat needs to be up to a good temperature for a period of time.
motorway driving is good, but an energetic A road also.

 

[Deano3]

There is no need to "give it some welly" just go for a slightly longer drive than you normally do on your daily work run. Maybe just take a slightly longer route home one day a week.

If you feel and/or hear it go into regen it's good practice to keep driving until it's finished. The idle RPM will be higher when in regen. When I notice this I just take a slightly longer route home to allow it to finish.

That's brilliant thanks for that will see if revs are higher next time and take along road for 5 mins on longer route and hopefully if does a regeneration once a week it will stay down and not get clogged up

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[dw911]

You don't need a twenty mile drive, or 70 mph in 6th (probably make it worse)
Just a energetic a road as andicupra said, or a clear dual carriageway.
Keep the revs up, if your doing 70mph you want the revs up around 3-4000 rpm constant for a couple of miles, gets it nice and hot and doing its cleaning thing.
Sure the book probably says something boring and different, but doing that seems to work the quickest especially if the dpf light is on.
There is an Even quicker way, but it only works with dsg
Other option is have a diesel for long trips, cupra for short trips, works for me

 

[robin cur]

My VW doses high mileage (20K a year) so never a problem my Merc is only used on short mileage, in my user manual it states about every 300 miles take car for a 20 min run and keep revs over 2k so if in traffic keep it in a low gear. Would think this would be the same for any car with a DPF.

 

[mrratty]

I only said give it some welly so the op has some fun whilst doing a tedious task just driving round!!

 

[ben4012]

if your doing 70mph you want the revs up around 5-6000 rpm constant for a couple of miles

Errr please don't do this. 5-6000 revs is redline

 

[dw911]

Errr please don't do this. 5-6000 revs is redline

Thanks
Yep your quite correct, was thinking cupra rev gauge , ment 3- 4000 rpm
I'll edit my post

 

[Curtly]

Oh the benefits of owning a petrol

 

[Deano3]

I noticed this morning it was redline haha will give a blast few miles up motorway after work at 3000 to 4000 revs or when I am off, will get up to temperature first , thanks for help everyone. Do some people just wait till light comes in first then do this ? And as long as do once a week it should be enough shouldn't it ?

Dean

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[dsr]

And as long as do once a week it should be enough shouldn't it?

Should be. My lifestyle means I can do a number of short journeys (less than 3 miles), with some consecutive days where I don't touch the car. My experience is that, provided I do a 25+ mile run at least once a week (a normal drive - no keep it in 5th, minimum revs stuff) I am fine. Not had a DPF issue for 18+ months.

 

[Dt-spd]

You don't need a twenty mile drive, or 70 mph in 6th (probably make it worse)
Just a energetic a road as andicupra said, or a clear dual carriageway.
Keep the revs up, if your doing 70mph you want the revs up around 3-4000 rpm constant for a couple of miles, gets it nice and hot and doing its cleaning thing.
Sure the book probably says something boring and different, but doing that seems to work the quickest especially if the dpf light is on.
There is an Even quicker way, but it only works with dsg

This is poor advice.

Do you understand how a regen works and what steps the PCM is taking to regenerate the DPF ??

70mph in 6th is almost perfect conditions for a regen, there is plenty of oxygen in the exhaust to allow a nice exotherm to develop and the soot to burn off.

 

[DANFR180]

you need to be doing regular longer journeys really to keep things clear, if you just do the odd longer run to try and 'clear' it out it wont, you will find the regen will likely kick in when you pop to the shops. its not very clever

 

[dw911]

This is poor advice.

Do you understand how a regen works and what steps the PCM is taking to regenerate the DPF ??

70mph in 6th is almost perfect conditions for a regen, there is plenty of oxygen in the exhaust to allow a nice exotherm to develop and the soot to burn off.

Yes completely understand how they work, have had a few - the very early mk3's were the worst, plus the stupidity loud fan, thankfully quieter on later models -
In my experience what I put was the best way I found to reduce the frequency of the dpf regenerating and definitely the fastest way to put the light out if it came on.
Anyway I was just making a suggestion and I did note in my post the handbook says something different.
It's up to people if they wish to try my suggestion or someone else's or simply follow what the book says, that's why this is an advice based forum and not a you must blindly follow whatever someone posts forum

 

[foad88]

Hi,

So occasionally after a long run, i arrive at the destination. Fans are blowing full and warm air from beneath car.

Does this mean that a regen has been going, and hasnt completed its cycle or is it continuing the process after the engine is off ?

It is it usual behaviour .. I dont look at the rev to see the increase so I cant comment on that .

Cheers

 

[stu_m]

everyone with a dpf should read this!

http://www.seatcupra.net/forums/showthread.php?t=263734