DPF Activated

[Anonymous]

Coming back from Tenby yesterday, the DPF warning light / beep activated.

Nice picture displayed on the Driver's Console, with a message on the centre display stating that there was a risk of Soot building up.

Anyone that knows the route back from Tenby to Neath will know that there's a couple of nice long stretches, with about three / four sets of roundabouts.

Tried doing between 70-80 mph which cleared the fault (small exlaimination mark by Odo appears / disappears), although everytime I got to a roundabout (slight queue due to the lush weather !!), the DPF would once again re-activate.
Did the same sort of speed and had the same result at the next roundabout.

Tried doing 50-60 mph on the next straight to the next roundabout. All cleared for the remainder of the journey home - and hasn't activated at all today.

Bit disconcerting when it initially activates, although I was very lucky to be on some open stretches.
Not sure how long it would take from the initial warning to activate the limp-home mode had I been stuck tootling around a City Centre :eusa-think:

Anyway, as the Manual states and as shown above, don't be tempted to drive faster thinking that it will burn the soot off any quicker if your DPF activates. Do the 50-60 mph and burn it off steadily and effectively.

Cheers.

 

[renegade79]

Good advice that! I have the Diesel engine too and I'm always worried about that DPF fault!!

 

[Anonymous]

Anyway, as the Manual states and as shown above, don't be tempted to drive faster thinking that it will burn the soot off any quicker if your DPF activates. Do the 50-60 mph and burn it off steadily and effectively.

Cheers.

Doesn't need to be 50-60 mph, it's (normally, but should be the same for Peugeots) all about the revs.

Note down the revs at that speed, and whenever you have to slow down change gear to stay at that revs.

Audi advices to stay about 2000 rpm for 15-20 minutes to burn it off.

No idea why this warning never came up on mine :eusa-whistle:

 

[Anonymous]

I had this problem coming up when the car was new, now it never pops up.

 

[Anonymous]

DPF regen needs a few "hoops" to be jumped thro.

The engine needs to be at working temp
The throttle position needs to be fairly constant
Engine speed needs to be above 2000 rpm

What it does is post injects fuel into the car so it gets into the exhaust (to act as the fuel for the regen)
So to allow enough of this to get to the DPF the "hoops" above need to be met for a period of time.
Then once started, the flow of exhaust gas need to be kept up to allow the ash to pass out of the system.

So as you can see, the A road with roundabouts, will not work too well. However, this process is quite swift and if you arrive at a section of motorway type road with the car hot and get the steady throttle on, it should complete in a few minutes. BUT soon as you lower the flow or get off the throttle (or ON) it has to start again.

Do not think that just sitting outside your house with the boot on the pedal will do it, as the ECU reads demand and speed as one of its inputs to regen, no speed = no regen. olice:

Hope this helps

Paul :beer: