Bad news about DPF removal - MOT 2014

[MSS]

Originally Posted by grivas

That signals the gradual death of modern diesels ...

Not really, it is these technologies that are responsible for the development of diesel engines so that they really are usable in mass produced cars. Current diesels bear no resemblance to those produced just 15 years ago, to the point they are challenging petrol engines for performance and emissions.

Many PSA engined cars of French origin have been fitted with regenerating DPF with Eolys injection for about 5 years now and with each generation of the technology, there have been improvements. My guess is that in 5+ years time, people will not even pay attention to the fact that their new car is fitted with such a system.

Rememeber all the negativity when catalytic converters were first fitted to petrol cars in the UK? and now?

[Ross R75]

Originally Posted by carguy143

A DPF is a bit of smoke and mirrors trickery if you ask me. They "catch" soot particles when driving around normally but then **** them out of the exhaust when revving up more, say on the motorway or that fast road in the country.

During regeneration, the soot is burned at about 700 degrees and comes out of the DPF as ash, which is apparently less harmful. Currently looking at the possible purchase of an Insignia CDTi 160 estate and have been trawling the internet for DPF failure reports. They seem to be ok on this car.

[bubs]

My brother used to work as a mechanic for Vauxhall, they've had some success at removing blocked filters and soaking them overnight (can't remember what in though). He's done this to a few cars and hasn't had to replace a filter yet. There's a few companies out there that will do it for you.

[rrobson]

Originally Posted by sworks

It's not like a catalytic convertor unfortunately, the temperature and pressure inside the dpf is measured and if incorrect will put the check engine light on which is also a fail making it almost impossible to remove the insides without having the ecu remapped to ignore it. The biggest dpf issue is small cars that are just used around town, cars need to be run over a distance to get them to regenerate at a pre set speed, drop below the speed once the regen has started and it will fail to complete. Manufacturers are starting to change the regeneration protocols so that they regen at a slower speed.

Yeah, but if the car has had the dpf electronically removed, the dpf casing could be welded back in situ so it looks like it's still there.
If the dpf has been completely cut out then something would need to be put back in place so it looks like there's still a dpf there.

Dpfs are a nightmare. I had one on a previous car but got rid because I didn't want problems from it. Not worth the cost and hassle. No easy way of getting round this new law either.

[Moodster020]

Silly legislation required pointless technology like this is an example of a reason why i'll never buy new.


That'll be a £2k repair bill, sir

[Mark2000cc]

So just to confirm, is it panic over? Lol

[bubs]

yup, at least it's one thing you don't have to worry about with our diesels