The DPF tries to passive regenerate to burn off the soot particles by the DPF getting its self hot by a good run with a bit of hard driving with a few revs. The active regeneration comes into play when the soot particles build because of a lot of starting and stopping the engine a lot especially in cold weather with short runs, leaving it ticking over for periods, stop and start town driving, driving steady and trying to be economical with fuel. So yes driving style and short journeys plays a big part in the DPF having to active regenerate its self by burning diesel in the DPF till it gets hot enough to burn off the soot particles
Thanks Al, I do drive with a very light foot. My last was a Mazda Cx 7 2.3 Turbo petrol which averaged 23 mpg. On one run with the Captiva the computer informed me that I was getting 49 mpgwhich is amazing. I only hope that the computer is fairly accurate!
would this be the reason for my very poor mpg (check my topic ) i have been doing lots of short journeys and sitting with it ticking over and trying to be very gentle on accel pedal is my 57 plate 2.0 diesel lt fitted with this dpf ? What ever that is
and would it sort itself with me driving it hard ?
Captivamondo regarding economy, steady purposeful acceleration, a few revs and a bit of speed helps passive regeneration and higher gears which is good, stop go and idling very bad. Drive meaningfully but don't push the juice through and try your MPG test. Should improve on youre 16mpg Hopefully 26-28 and just over thirty on a run with an auto.
Hey you clever lot, how do you know your motor is regenerating? I haven't noticed anything on my manual 2.0 diesel to tell me it is regenerating. I did get 49.5 mpg for 15 miles or so after filling up with fuel with the engine fully hot, but it started to drop after the next cold start.
The only thing I noticed is my tick over revs never alter always sat on 800 revs on the auto, after a short run I noticed my tick over went up and was holding at 1,000 revs, I suspect but can not be 100% sure that at that stage I was having a active regeneration. Watch out for it and see what you think, that's if your driving pattern requires active regeneration. [when this happened to me I drove round a bit longer the revs came back to normal, and hoped to have not stopped mid regeneration causing the oil contamination?].
I have a dashboard warning light that comes on, when it regenerated at first I did not know what was wrong, my fuel consumtion went up and the amber light came on. I was quite relieved after reading the manual, and the light went out after a short drive. It is a pity that the poorly trained salesman did not tell me to look out for this.
A forum community dedicated to all UK Chevrolet owners and enthusiasts. Come join the discussion about troubleshooting, maintenance, modifications, classifieds, and more! Open to all models including the Captiva, Aveo, Spark, Kalos, and Orlando.