Questions about Leon FR 184 and dpf/regen

[Snowman]

When I bought my 184ps diesel Leon I was aware of the regen and possible dpf problems.
But since I use the car for around town driving and do a lot of longer journeys I figured it would be fine.
I don't mind the extra fuel consumption the regen causes, I'm just worried about the car itself..

But how often is the car supposed to do regens?
This morning it did it and I've only done 2 trips of total 10km since last weekend when I drove 780km mainly motorways.
A friend of mine told me the dpf regen should only occur about every 10000km, which makes me think there might be something wrong with my car..

I've now had the car for about 2months and I have done almost 8000km, which I would say 80-90% consists of longer motorway drives.
In that time I would say I have noticed that the fan have been on full blast maybe around 15times when exciting the car.

As I wrote earlier I don't mind the extra fuel consumption during the regen.
But I'm just worried that there might be something wrong with the car..

 

[DEAN0]

When I bought my 184ps diesel Leon I was aware of the regen and possible dpf problems.
But since I use the car for around town driving and do a lot of longer journeys I figured it would be fine.
I don't mind the extra fuel consumption the regen causes, I'm just worried about the car itself..

But how often is the car supposed to do regens?
This morning it did it and I've only done 2 trips of total 10km since last weekend when I drove 780km mainly motorways.
A friend of mine told me the dpf regen should only occur about every 10000km, which makes me think there might be something wrong with my car..

I've now had the car for about 2months and I have done almost 8000km, which I would say 80-90% consists of longer motorway drives.
In that time I would say I have noticed that the fan have been on full blast maybe around 15times when exciting the car.

As I wrote earlier I don't mind the extra fuel consumption during the regen.
But I'm just worried that there might be something wrong with the car..

Not sure where the 10,000km number came from but there is no set period for a regen - the sensors register the dpf getting blocked and activate the regen process.
On longer runs above 60kmh the regen happens without you noticing it.
The only time you will notice a regen happening is when you come to a stop ( the idle speed will have risen to around 1000rpm )
And of course if you switch off the car during a regen the fans keep running.

 

[EoinM]

You can force a regen too through driving style. In eco mode, floor it and keep gaining speed and that can trigger it.

 

[Snowman]

You can force a regen too through driving style. In eco mode, floor it and keep gaining speed and that can trigger it.

Had no idea about that, thanks!

I guess i shouldnt worry unless i get the DPF-light lit then?

 

[EoinM]

Exactly, unless the light is on don't worry at all. Your usual driving type is conducive to a modern diesel.

If you had said it was all town driving then a petrol might have been a better option but you should he fine.

The very odd time I might notice the dpf doing a regen when I'm in traffic near my house, I would usually take it for a spin out the bypass and back to leave it finish rather than park it up but it won't be the end of the world if you leave it finish on the next spin.

 

[DEAN0]

If the clowns would put a warning on the dash that a regen was happening it would make life so much easier.

 

[Obee72]

Ahhhh!! Thats why I've noticed the fan blowing a few times when I've parked up.

 

[andrewpain]

I think driving style is the key. If you squirt the pedal a lot you'll be getting a lot of diesel in the chamber and generating more soot.
I think if you're a little gentle on accelerating (hard, I know) then there's no excess derv splashing about and it's all burnt efficiently with no excess soot.
I think...
and hope!

 

[dw911]

Seems to be no set time, does it when it feels like it, mine did one after only 60 miles on the clock
I've also done long trips at speed on autobahns/motorways and the very next day after a very short drive it's doing a regeneration ??
As long as the light doesn't come on I wouldn't worry, although even if it does its easy enough to clear it
It would be helpful for it to have a light to tell you when it was happening, but you can easily tell when it is regenerating as the revs sit at 1000 rpm instead of the normal 800 rpm on tickover

 

[andrewpain]

I've noticed it obviously from the increased revs and the noisy overrun from the fan, but never had the light on. 11500 miles so far.

 

[dw911]

I've noticed it obviously from the increased revs and the noisy overrun from the fan, but never had the light on. 11500 miles so far.

light only comes on when the soot level reaches a set amount (30 % I think, but I might be wrong on the % figure ) it comes on to let you know to do something about it before it reaches a dangerously high level that requires a trip to the dealer's to sort out.
If the light does come on though it's easy to get it to go out as long as you heed the warning, just take it for a 4 or 5 mile run on a fast empty road and keep the revs high, speed is not so important (although it's fun) but keeping the revs high are, and the light will go out

 

[jcbmally]

Remember regens also use engine oil so keep an eye on that too.

 

[DEAN0]

just take it for a 4 or 5 mile run on a fast empty road and keep the revs high, speed is not so important (although it's fun) but keeping the revs high are, and the light will go out

I suggest you read the manual before it costs you a lot of money.

High revs are not the way to do a regen quickly.

steady speed above 40mph with revs between 2000 & 2500 provides the correct conditiond for best dpf regen process.

 

[DEAN0]

Remember regens also use engine oil so keep an eye on that too.

Do you have that in writing ?

The ecu adjusts the fuel mixture during a regen to heat up the exhaust temp which enables the dpf to get up to regen temperature.

 

[twitchynik]

5000miles in 6mths on mine and only a couple of noisy fan when stopped moments and no warning lights.

Daily commute is 13miles each way on 90% NSL dual carriageway/motorway, always 90C+ oil temp at each end. Occasional long, 100mile+ journey and weekend pottering around.

 

[marty_34]

9600 miles mostly 20 mile commutes to work 70mph roads.....had a d p f light this week

puzzled!

 

[DEAN0]

9600 miles mostly 20 mile commutes to work 70mph roads.....had a d p f light this week

puzzled!

It's possible the car was still in a regen cycle when you got to work/home and you interrupted it by switching off the car.

I believe that if you interrupt more than three regens in a row the light will come on and force you to go for a drive to complete a regen cycle.

 

[marty_34]

should be doing it passively i think as i do 21 miles to work each way all motorway and the oils always over 90c so well warmed up

never drive it like miss daisy either it gets a good kicking couple times a week as well

 

[DEAN0]

should be doing it passively i think as i do 21 miles to work each way all motorway and the oils always over 90c so well warmed up

never drive it like miss daisy either it gets a good kicking couple times a week as well

I have had it where I did a 235mile trip down to London area with no traffic ( late night run )
- as I came off the motorway and stopped at the roundabout the fkn thing was doing a regen.
luckily the 10 miles down the dual carriage way finished the regen.

Just because you get up to temp - does not automatically start a regen process.
The engine will only start a regen when it feels it needs it.

 

[LeonFRTDi]

So iam I right in thinking if the tickover is at 1,000revs & I can hear the fan going at any time when iam about to stop the car is it better to leave it ticking over rather than stop it? or keep driving it ??

Ive just got some of that JLM DPF Regen Plus Additive ?? anyone used it?