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Software Update/Exhaust smoke

428 Views 7 Replies 5 Participants Last post by  chiptivo
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I have a v40, D2, 2015, automatic with 64k miles. I usually do small (5-10 mins ) journeys but during a week also do 2-3 long journeys (20-25 min )but not with a constant speed and never over 50 mph.

The car is serviced yearly already changed oil and air filter and also fuel filter an expensive one and I use in the last 5 months only Shell V Power. Drives well, no trembling, no delays, fuel consumption still very good.

The only issue is that I have black smoke when I gas it hard (4k rotations) having around 20% over the maximum admitted emissions.
My first question: did someone had the same issue and took the car for a software update from Volvo to reduce the emissions? I heard that they do this after the car gets older to update the injectors and how they work

I honestly suspect the DPF but I feel a sensor that might be faulty/clogged is messing the mixture between the fuel and oxygen.

I will take the car to a specialist soon and think for the worst and hope for the best.
Any advice is more than welcomed.
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The first thing I would try would be to burn the DPF out, I would do this by using my local motorway network to do a 50 mile run and use manual mode to do it in a lower gear to keep the revs between the 2.5/3K range so it won't be too hard on things but will get the DPF hot and keep it hot for long enough to burn the carbon out of it. Best done at night as the roads should be free flowing.

See if it helps then go from there.
Modern diesel engines don;t perform well on lots of short journeys (and 20 mins at 50mph is a short journey)
Give it a good blast on a motorway or dual carriageway at 60-70mph for 30-40 mins at least and get the DPF regeneration going.
As above, give it a decent run, could help reduce the issue.
Is yours a 1.6 D2? It's worth noting my old 1.6 with 30k emitted around 4 times the soot particles of my 2.0, the tail pipes were always black
I have/had between 1.1-1.4 emissions let’s say a median of 1.2. How did you pass the MOT?

yes, 1.6 D2
I was lucky that it was below the maximum for mot, but still much more soot particles than it should have produced
They have failed me even for 1.1 maybe they wanted me to give them money. Anyways, I will give it a really long run (2-3h of driving on highway) and after will see what to do next.
Using V-Power continuously probably isn't the best idea tbh.
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