Diesel particulate filter fix.
Please see my other video with clearer text and more detail DPF FIX PART 2
http://www.youtube.com/watch?v=TXLZEG6It8o
This was done on a 2004 Volvo V50, but as Volvo are mostly ford parts, its also applicable to fords of the same era with same hardware, etc.
My symptoms were DPF filter blocked, Elloy tank empty, limp mode, revs limited, causing fault lights and Engine service lights to come on, 2800rpm limit!!
The Fix in short
To Remove the DPF from below the vehicle.
1 Disconnect two rubber pressure feedback pipes pliers will do this.
2 Disconnect the temp sensor plug from cross member directly below pressure pipes.
3 Unbolt unit-using spanners and ratchet may require a good soaking with WD or similar.
4 Bore out ceramic of DPF to approx. 20mm-25mm MAX using drill, some BACK PRESSURE is required don't remove to much material
5 Blank off pressure pipes or simply loop them together using redundant hose.
6 Refit DPF unit and reconnect temp sensor.
7 Disconnect and loop pressure sensor on battery box {under bonnet}
8 On pressure sensor remove plug locate the correct wires as per video and fit potentiometer and adjust value as per video you will need a basic multimeter.
Have a look at 1.06 -1.12 seconds in the clip for wiring of potentiometer, to adjust you need a small instrument screwdriver values are not set in stone, you may need to adjust yours slightly different than mine to work.
9 Make sure you secure potentiometer and wrap in insulating tape to protect potentiometer.
10 CLEAR ALL FAULTS and restart engine check performance and readjust potentiometer to suit see video for more detail.
Potentiometer links {UK only} hope these links help you!! Available worldwide on e bay usually around £1.60 each for wiring have a look at picture 106 -115 seconds in on my video.
http://www.maplin.co.uk/square-22-turn-cermet-preset-potentiometers-2202
http://www.ebay.co.uk/sch/i.html?_nkw=22-turn-cermet+potentiometers&_sacat=0&_odkw=22-turn-cermet-preset-potentiometers&_osacat=0&_from=R40
Update running like a dream MOT passed August 2012.
No problems snap acceleration test 2.61 l/m
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Slight tweaks for other makes models but if you have a DPF in your Exhaust with a 2 pipe "differential sensor & temp sensor" on DPF this procedure is applicable to similar vehicles with minor variations to adjustments i.e. potentiometer resistances, wire colors may vary etc.
Please see my other video with clearer text and more detail DPF FIX PART 2
http://www.youtube.com/watch?v=TXLZEG6It8o
seems plenty others are also having problems with DPF filters !!
http://www.bbc.co.uk/blogs/watchdog/2011/10/diesel_particulate_filters.html
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