Diesel Particulate Filter problems...?
Discussion
Did anybody see the item on BBC Watchdog the other night regarding DPFs which are now being fitted to virtually all new diesel powered vehicles. The filter is designed to catch the sooty particles in diesel exhausts to help comply with the latest emission requirements and to prevent us all from suffering a horrible early death.
It seems the problems with these things occur when the vehicle is driven at exclusively 'town speeds' where the engine spends most of its time at low revs. This doesn't allow the filter to regenerate (purge itself of all the accumulated crap) and if the DPF warning light comes on you have to (depending on manufacturer) drive the car, without pause, for something like 15 mins at an rpm of at least 2500rpm to clear it out. If you dont do this and the DPF continues to fill up then further warnings will appear which mean a trip to your local dealership where you will be probably told you weren't driving the vehicle correctly. If they can't regenerate it then its credit card time - to the tune of something around £1k.
I've just ordered a diesel Cayenne - anybody had any issues with the DPF yet?
And are these things covered under warranty?
It seems the problems with these things occur when the vehicle is driven at exclusively 'town speeds' where the engine spends most of its time at low revs. This doesn't allow the filter to regenerate (purge itself of all the accumulated crap) and if the DPF warning light comes on you have to (depending on manufacturer) drive the car, without pause, for something like 15 mins at an rpm of at least 2500rpm to clear it out. If you dont do this and the DPF continues to fill up then further warnings will appear which mean a trip to your local dealership where you will be probably told you weren't driving the vehicle correctly. If they can't regenerate it then its credit card time - to the tune of something around £1k.
I've just ordered a diesel Cayenne - anybody had any issues with the DPF yet?
And are these things covered under warranty?
DPF legislation is crazy because it overall increases fuel consumption and just shifts particulates from one place to another.
Whilst generally true that diesels with dpfs don't like just being driven around town, it is a bit more complex than that. There are also other issues with dpfs depending upon the type of sensors used, the location of the dpf relative to the turbo and also the impact on the oil of regenerations.
All in all it's going to be another reason to not own a higher mileage / age diesel.
Whilst generally true that diesels with dpfs don't like just being driven around town, it is a bit more complex than that. There are also other issues with dpfs depending upon the type of sensors used, the location of the dpf relative to the turbo and also the impact on the oil of regenerations.
All in all it's going to be another reason to not own a higher mileage / age diesel.
DPF's are a right royal pain in the bum. We had a 2007 golf in with one fitted and blocked. We did manage to force regen it but we also found out that a new one was going to be £1400.00 plus the fitting. My advise is unless you are using the vehicle on a duel carriage way at speed often then buy a petrol.
I wouldnt worry 'too' Much.
My work car and my partners car have these filters. The mrs car is on 150k miles with no issues.
There is a flud that need filling on our cars eloys(spelling) which is an easy job but if this filter knackers up Peugeot want 1k plus to sort
However! the filter can be removed and bypassed very easiliy and cheaply.
My work car and my partners car have these filters. The mrs car is on 150k miles with no issues.
There is a flud that need filling on our cars eloys(spelling) which is an easy job but if this filter knackers up Peugeot want 1k plus to sort
However! the filter can be removed and bypassed very easiliy and cheaply.
some sensible (mostly none daily mail reading) advice here:
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
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