DPF Regeneration

[Heliwilly]

Another quick question. 
Is there any indication or warning light that indicates  the DPF needs regenerating? 
Is it just the 2,000 rpm blast for 20 mins or so?

Bill W.

 

[Shahpor]

Hi Bill,

No indication other than loss of power and potentially generic fault lights on dash.

Generally, yes, a blast a high-ish rpm would do but, the only way to be sure is to get a copy of TechStream and do a forced regen.

[Mr Vlad]

Seconded

[Heliwilly]

Hi,

A blast at 2000rpm gets the DPF up to working temp and continuing for approx 20 minutes burns off all the deposits left from short runs. How exactly does the Forced Regen via the Techstream work?
Thanks

Bill W.

[Linas.P]

The difference between normal DPF work and "forced regen" is that later removes restrictions on when DPF regenerates. Normally DPF regenerates at speed above 55MPH (or maybe 60) and in 4th gear or above (basically on open road in country side that you don't drive in the city with black smoke behind you and don't poison everyone around you), when you "force regen" it will start regen as soon as DPF gets to temp even if car is stationary.

Removing DPF would make your car illegal to use on public road, with potential of losing MOT on the spot (sadly no risk of that in UK, but in Europe police do checks) and driving car which is not road worthy as well invalidates insurance. That is just few reasons if health of people around you isn't enough of the reason. So let's just say - don't do it!

[Shahpor]

12 hours ago, Heliwilly said:

Hi,

A blast at 2000rpm gets the DPF up to working temp and continuing for approx 20 minutes burns off all the deposits left from short runs. How exactly does the Forced Regen via the Techstream work?
Thanks

Bill W.

The car has a regen mode wherein it dumps extra fuel from the 5th injector into the exhaust the get the DPF very hot.  Normally a blast will work, but as Linas says, enabling the mode will guarantee a regen even when the car is standing still.