Who's had the biggest DPF bill?
Discussion
The Wookie said:
Forgive me if there's some detectable regulatory requirement and this is a daft statement... but... why bother replacing it, why not just bypass it? It's only a bit of black smoke.
Ok until the MOT Test comes around.....Edited by The Wookie on Monday 22 November 16:37
Oh and getting stopped by the police/VOSA....
Never had a problem with one ever - and thats in a fair few miles driving a range of different diesels.
I also don't know how diesel servicing is working out expensive for people.
My V70 D5 was roughly £250 a service every 18k which I didnt think was too bad - DPF recharged itself so didnt need replacing (same with my new one).
Older Volvo DPF models needed changed at quite an expense unfortunately.
In the end though do research and pick right car for the job, I personally wouldnt buy a diesel for less than 10k or short runs personally as its asking for trouble.
I also don't know how diesel servicing is working out expensive for people.
My V70 D5 was roughly £250 a service every 18k which I didnt think was too bad - DPF recharged itself so didnt need replacing (same with my new one).
Older Volvo DPF models needed changed at quite an expense unfortunately.
In the end though do research and pick right car for the job, I personally wouldnt buy a diesel for less than 10k or short runs personally as its asking for trouble.
Edited by halo34 on Monday 22 November 16:53
Petrolhead_Rich said:
The Wookie said:
Forgive me if there's some detectable regulatory requirement and this is a daft statement... but... why bother replacing it, why not just bypass it? It's only a bit of black smoke.
Ok until the MOT Test comes around.....Edited by The Wookie on Monday 22 November 16:37
Oh and getting stopped by the police/VOSA....
Not sure why the police/VOSA would be bothered if it conforms to MOT requirements, it's not as if they're going to run a full NEDC test on it to see if it meets Euro 5 emissions!
euroboy said:
The Wookie said:
Forgive me if there's some detectable regulatory requirement and this is a daft statement... but... why bother replacing it? It's only a bit of black smoke.
Agreed, why bother?One of the first things diesel tuning companies do on a lot of models these days is delete the bloody thing anyways.
My previous Alfa with the DPF used to regularly go on a 'burn' cycle where it would make the exhaust very hot and clear out the filters. Can they all do this?
The filter regenerates at 50mph in about 5 minutes so no big deal really . I used to have this problem once a week if I drove in town only and one short blast on the a3 cured it in less than 3 miles each time . I don't get it as much now because I drive in the evening much more now and I can achive 50mph more often than rush hour . My car gets driven only in central London
DPF can be removed from a car, will need appropriate ECU tweaking though.
MOT will not be an issue, it only has to pass the same smoke test as any older diesel. I also fail to see why the police/VOSA would be interested in checking for the absence of a DPF or indeed what possible penalty could be applied.
MOT will not be an issue, it only has to pass the same smoke test as any older diesel. I also fail to see why the police/VOSA would be interested in checking for the absence of a DPF or indeed what possible penalty could be applied.
having worked previously in a VAG dealership, I would never ever have a car or van with one of these on, they cost a fortune to replace, the amount of people we would have come in complaining, the car going into limp mode every time etc
One of the salesman had a decent size journey into work and back each day including some motorways, and he would still have problems with the new 1.6TDI VW are sending out.
On another not, petrol lovers cant really escape from increasing bills either, all these new TFSI engines about, and turbo AND a supercharger to service!?!?!? fair enough they are only small ones but they will still be expensive when they break.
I'll stick with mid 90's tech and older thanks!
One of the salesman had a decent size journey into work and back each day including some motorways, and he would still have problems with the new 1.6TDI VW are sending out.
On another not, petrol lovers cant really escape from increasing bills either, all these new TFSI engines about, and turbo AND a supercharger to service!?!?!? fair enough they are only small ones but they will still be expensive when they break.
I'll stick with mid 90's tech and older thanks!
Oddly, given that it's Italian, I've had no trouble at all with the DPF on my 1.9 diesel (150bhp) Fiat Bravo in over 2 years and 50000+ miles.
The handbook does recommend that you give it a good seeing-to every now and then to keep the filter cleared; the odd hammering through the gears that it gets to overtake lorries (and f***ing pensioners in f***ing Micras) seems to have done the trick.
So out of interest, those who've had clogged filter problems, does your car ever get a good thrashing?
The handbook does recommend that you give it a good seeing-to every now and then to keep the filter cleared; the odd hammering through the gears that it gets to overtake lorries (and f***ing pensioners in f***ing Micras) seems to have done the trick.
So out of interest, those who've had clogged filter problems, does your car ever get a good thrashing?
I've never come across one of these with a problem, so I have limited experience. However as far as i'm aware I believe you get a first warning light, which gives you the opportunity to give it a good drive to clean it up, and clear the problem.
So based on the above assumption being true. I cant see how so many people have trouble. All you have to do is get it up to temperature for a little while??
Are these people having these problems because they are ignoring the warning lights? or have I misunderstood?
So based on the above assumption being true. I cant see how so many people have trouble. All you have to do is get it up to temperature for a little while??
Are these people having these problems because they are ignoring the warning lights? or have I misunderstood?
frosted said:
euroboy said:
The Wookie said:
Forgive me if there's some detectable regulatory requirement and this is a daft statement... but... why bother replacing it? It's only a bit of black smoke.
Agreed, why bother?One of the first things diesel tuning companies do on a lot of models these days is delete the bloody thing anyways.
My previous Alfa with the DPF used to regularly go on a 'burn' cycle where it would make the exhaust very hot and clear out the filters. Can they all do this?
The filter regenerates at 50mph in about 5 minutes so no big deal really . I used to have this problem once a week if I drove in town only and one short blast on the a3 cured it in less than 3 miles each time . I don't get it as much now because I drive in the evening much more now and I can achive 50mph more often than rush hour . My car gets driven only in central London
PKLD said:
sorry for being a noob but are we saying that if you hoon, i mean, 'exercise' a diesel - i.e use the full rev range, then you won't have problems. so speed really does matter?
I think that's true for the Fiat/Alfa unit anyway - it seems as though the problems are mostly limited to cars that don't get hot enough for long enough, so it struggles when it needs to burn the filter clean.PKLD said:
sorry for being a noob but are we saying that if you hoon, i mean, 'exercise' a diesel - i.e use the full rev range, then you won't have problems. so speed really does matter?
http://www.honestjohn.co.uk/faq/diesel-particulate-filtersI think that pretty much covers the matter. Essentially the engine needs to be hot for a fair while and going fairly quick. I'm not sure hoon so much as a good cruise. The thing that should be more worry some for town owners of DPFs IMO is oil in fuel content and the ability to provoke a runaway. Unless the manufacturer has been nice enough to fit an oil level sensor it would bother me. Also servicing intervals will be much higher in towns.
I know an Audi technician who will advise you to run away from DPFs.
most of the Audis have a procedure you have to follow when the light comes on to cause a "burn" to purge the DPF. I forget the exact requirement but its something like a 60 minute drive at a certain rev range. He regularly sees cars that don't get a chance to be purged, or worse still that keep putting the light on several times in a short period of time - 2 or 3 times a week in some cases - owners think they are seeing a fault because the purge doesn't work, so the car goes to the dealer. In the end the DPF needs replacing and can be into 4 figures.
A case of the technology just being ready I think.
most of the Audis have a procedure you have to follow when the light comes on to cause a "burn" to purge the DPF. I forget the exact requirement but its something like a 60 minute drive at a certain rev range. He regularly sees cars that don't get a chance to be purged, or worse still that keep putting the light on several times in a short period of time - 2 or 3 times a week in some cases - owners think they are seeing a fault because the purge doesn't work, so the car goes to the dealer. In the end the DPF needs replacing and can be into 4 figures.
A case of the technology just being ready I think.
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