Any DPF experts on here.

hinged_bap · 22nd July 2019, 20:31

Not Rover/MG related but I hold the views of members here in high regard.
My sister has a 2012 Vauxhall Mokka 1.7 Turbo Diesel. Used mainly for short journies. The other day, the DPF light came on and went into limp mode. I suggested a DPF cleaner which I sourced and for a day or so, things were looking up. But no longer, it now seems to be a solid fault and she took

it to garage where they hooked it up to the computer. They say it needs:
- a new DPF
- a new sensor ( report doesn't say which one )
- a new glow plug
- new oil/filter/gaskets ( fair enough )

But the cost is truly staggering, the DPF alone is £1,376 and with the other bits, the total bill with labour is not quite 2K.

Apparently, the garage tried to do a 'forced regeneration' but the vehicle didn't want to oblige. I've been doing some research and i see some companies actually clean DPF's ( using various methods ). I was hoping someone might have actually had it done and can comment on the success (or otherwise), failing that, are there any auggestions for a cheaper alternative repair.
many thanks
Bap

Mr bountyfull · 22nd July 2019, 20:48

Find a garage that will remove the DPF and flush it through with water usually about £100-£150 the chemical cleans etc work but cost so much more. This will not fix the source of the problem and will quickly re-block if the underling fault is not found.

Most garages will run a diagnostic and offer to replace what the see as a logged fault (commonly O2 sensor), they are usually wrong. If you ask if they can check the fuel trim long and short logs and they look puzzled they are not the garage you need.

Lessons learned with a Jaguar 2.7!

Mr bountyfull · 22nd July 2019, 20:52

Find a garage that will remove the DPF and flush it through usually about £100-£150. This will not fix the source of the problem and will quickly re-block if the underling fault is not found.

Most garages will run a diagnostic and offer to replace what the see as a logged fault (commonly O2 sensor), they are usually wrong. If you ask if the can check the fuel trim long and short logs and they look puzzled they are not the garage you need.

https://youtu.be/5WnM_NsOtd8

Lessons learned with a Jaguar 2.7!

Read them both, sorry

bobb12005 · 22nd July 2019, 21:34

give it an italian tune ie. drive it in third gear at about 4omph for about 15 minuets an it will regenerate. this works on my vw golf.then tell her to drive it on a longer trip every couple of weeks to regenerate the dpf.

bobb12005 · 22nd July 2019, 21:51

further to my last all diesels after 2008 are fitted with dpf and need to be run at working temp for 15/20 minutes preferabley motorway speeds to regenerate the dpf or the dpf fills with particulates and block.these veh. are not good for lots of short trips.

mcd840 · 22nd July 2019, 22:25

No wonder people simply have these NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- things removed

coab · 23rd July 2019, 06:10

A "Regen" happens as stated when the car goes over 50 mph for a period of time but must have over 1/4 of a tank of fuel and have no engine error lights on.
A forced regen can be done by a diagnostic machine but its imperative its had a recent oil and filter change due to the high revs gradually built up over a period of approx ten mins with the car stationary hence very high temps without the benefit of passing air cooling the engine.
Having said that if the DPF has gone the point of no return the car will not be able to perform the regen. Forte lubricants have a machine that flushes the DPF and injectors and inlet manifold (I believe whilst the car is running)and only 1 car could not be sorted which was a BMW with a cracked DPF that had hit a brick or similar. The treatment here in Coventry is approx £200 all in without removing any parts etc. Im a Forte distributor (you have to jump through hoops to get it) and just call the head office for your nearest garage who has the equipment.

024 7647 4069

22nd July 2019, 20:31	#1
hinged_bap Gets stuck in 75 CDT Conn SE Auto saloon Join Date: Jun 2010 Location: Southampton Posts: 773 Thanks: 134 Thanked 104 Times in 81 Posts	Any DPF experts on here. Not Rover/MG related but I hold the views of members here in high regard. My sister has a 2012 Vauxhall Mokka 1.7 Turbo Diesel. Used mainly for short journies. The other day, the DPF light came on and went into limp mode. I suggested a DPF cleaner which I sourced and for a day or so, things were looking up. But no longer, it now seems to be a solid fault and she took it to garage where they hooked it up to the computer. They say it needs: - a new DPF - a new sensor ( report doesn't say which one ) - a new glow plug - new oil/filter/gaskets ( fair enough ) But the cost is truly staggering, the DPF alone is £1,376 and with the other bits, the total bill with labour is not quite 2K. Apparently, the garage tried to do a 'forced regeneration' but the vehicle didn't want to oblige. I've been doing some research and i see some companies actually clean DPF's ( using various methods ). I was hoping someone might have actually had it done and can comment on the success (or otherwise), failing that, are there any auggestions for a cheaper alternative repair. many thanks Bap

22nd July 2019, 20:48	#2
Mr bountyfull Gets stuck in MGZTV8 Join Date: Aug 2008 Location: Newbury Posts: 567 Thanks: 173 Thanked 82 Times in 58 Posts	Find a garage that will remove the DPF and flush it through with water usually about £100-£150 the chemical cleans etc work but cost so much more. This will not fix the source of the problem and will quickly re-block if the underling fault is not found. Most garages will run a diagnostic and offer to replace what the see as a logged fault (commonly O2 sensor), they are usually wrong. If you ask if they can check the fuel trim long and short logs and they look puzzled they are not the garage you need. Lessons learned with a Jaguar 2.7! Last edited by Mr bountyfull; 22nd July 2019 at 20:50..

22nd July 2019, 20:52	#3
Mr bountyfull Gets stuck in MGZTV8 Join Date: Aug 2008 Location: Newbury Posts: 567 Thanks: 173 Thanked 82 Times in 58 Posts	Find a garage that will remove the DPF and flush it through usually about £100-£150. This will not fix the source of the problem and will quickly re-block if the underling fault is not found. Most garages will run a diagnostic and offer to replace what the see as a logged fault (commonly O2 sensor), they are usually wrong. If you ask if the can check the fuel trim long and short logs and they look puzzled they are not the garage you need. https://youtu.be/5WnM_NsOtd8 Lessons learned with a Jaguar 2.7! Read them both, sorry

22nd July 2019, 21:34	#4
bobb12005 Avid contributor rover75 Join Date: Jul 2012 Location: southampton Posts: 111 Thanks: 0 Thanked 10 Times in 10 Posts	give it an italian tune ie. drive it in third gear at about 4omph for about 15 minuets an it will regenerate. this works on my vw golf.then tell her to drive it on a longer trip every couple of weeks to regenerate the dpf.

22nd July 2019, 21:51	#5
bobb12005 Avid contributor rover75 Join Date: Jul 2012 Location: southampton Posts: 111 Thanks: 0 Thanked 10 Times in 10 Posts	further to my last all diesels after 2008 are fitted with dpf and need to be run at working temp for 15/20 minutes preferabley motorway speeds to regenerate the dpf or the dpf fills with particulates and block.these veh. are not good for lots of short trips.

22nd July 2019, 22:25	#6
mcd840 Gets stuck in Nissan NV300 Tekna 170 auto Join Date: Jul 2014 Location: alloa Posts: 667 Thanks: 22 Thanked 69 Times in 61 Posts	No wonder people simply have these NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- things removed

23rd July 2019, 06:10	#7
coab This is my second home 2007 57 GOLF GTi EDITION 30 DSG Join Date: Nov 2011 Location: Newport Shropshire and Coventry. Posts: 5,138 Thanks: 2,424 Thanked 1,452 Times in 852 Posts	A "Regen" happens as stated when the car goes over 50 mph for a period of time but must have over 1/4 of a tank of fuel and have no engine error lights on. A forced regen can be done by a diagnostic machine but its imperative its had a recent oil and filter change due to the high revs gradually built up over a period of approx ten mins with the car stationary hence very high temps without the benefit of passing air cooling the engine. Having said that if the DPF has gone the point of no return the car will not be able to perform the regen. Forte lubricants have a machine that flushes the DPF and injectors and inlet manifold (I believe whilst the car is running)and only 1 car could not be sorted which was a BMW with a cracked DPF that had hit a brick or similar. The treatment here in Coventry is approx £200 all in without removing any parts etc. Im a Forte distributor (you have to jump through hoops to get it) and just call the head office for your nearest garage who has the equipment. 024 7647 4069