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Old 17-06-12, 11:03 PM   #1
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Default Unblock diesel filter

Hello there, this topic seems to be going around quite a bit but cant seem to find answers.
got an 807 2.2 hdi 54 plate. filled up and reset additive.
then came the unblock diesel filter message. garage cleaned it out, m3mpower put it on pp2000 and still shows clogged.
purchased a new peugeot dpf/fap and local garage replaced it. message went for a few days and then re-appeared. Been in Limp mode since the first message. took it to pp2000 guy and still shows clogged. Then i drove for my holiday and totalled 750 miles in Limp mode (had no choice) and it killed triple the petrol up and down heavy hills in south wales. mainly 4th gear at 70mph or 2nd gear up hills (even tractors were going faster)
Still got "unblock diesel filter" message!
this stuff has drained my pocket and i have not been to a pug yet!
any ideas
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Old 26-06-12, 11:45 AM   #2
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Default Unblock diesel filter

hi Patsal
I recently had this issue with my C8 2.2HDI i removed the DPF unit and jet washed it thoroughly it took about 1.5hrs until it was completely clean i did this approx 1 month ago and have had no unblock filter alarms since i take it the pipes that measure the air pressure on the dpf unit are clear.
i am currently trying to research removing the unit all together i think that is the best all round option.
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Old 26-06-12, 11:51 AM   #3
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from what I gather the dpf system is nothing but a pain in the arse.get it stripped out and a nice new remap and youll be free of the bloody thing for good..
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Old 26-06-12, 12:35 PM   #4
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Is "Unblock Diesel Filter" not a message which relates to the fuel filter, and not the DPF/FAP which throws "Particulate Filter Blocked"?
Try changing the fuel filter.
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Old 26-06-12, 08:02 PM   #5
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"Unblock Diesel Filter" i fell for this i changed the diesel fuel filter 3 times thinking the motor factors had some duff filters then i did a bit of research online and found it was indicating Diesel particle filter why the alarm just couldnt say that in the first place i removed DPF jetwashed it through no alarm been a month now can any one point me in the right direction for details of removing it completely i have diagbox now but need a way of flashing the ecu the removal bit is not a problem .
by theway since cleaning the dpf MPG is up and its a lot more responsive so im thinking this can only improve more with it completly removed.
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Old 02-07-12, 06:35 PM   #6
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Has anybody done a live data test
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Old 02-07-12, 07:49 PM   #7
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How do you perform a live data test ?
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Old 06-07-12, 10:39 PM   #8
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Depends on your diag tool.

This is the symptoms of one in France I have to repair
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Old 09-07-12, 10:40 AM   #9
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Afaik the glow plugs must be in good condition for the regeneration system to work properly.

Mine just fills up the sump with diesel and destroys my oil.
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Old 25-08-12, 05:25 AM   #10
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Try changing the pressure differential senser on the FAP/cat unit 80 and arun down the road sorted mine
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