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D3 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again |
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#1
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DPF Trap 4.2TDi
OK Guys,
I've got a flashy coil light and MIL, and more importantly, no power at all really, limp mode is a bitch! VCDS reports Particulate Trap Bank 2 has efficiency below threshold. Looking at some other posts, a swap is going to be scarily expensive, so I'm looking at 2 options here: 1 - DPF removal and re-map 2 - Clean them myself, but that probably means I need a ramp to get to them. Anyone got any experience on number 2? Bloody typical that it happens on a Friday afternoon when I need to drive to Manchester on Monday morning. Or... if I forced a regenerate cycle with VCDS, might that sort it out? It'll clear , but after a bit of gas, it comes back
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#2
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Could try giving Brotek a call, remember the guy we met at Glasgow Audi? know he does removals and remaps all the time
http://www.brotek.co.uk/
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Audi S8 2002, Black (even the chrome bits) Audi RS6 Avant 2008, Daytona Grey Maserati Granturismo 2008, Metallic Nero Carbonio Audi S8 2015, Daytona Grey |
#3
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The DPF removal, decode and remap I had the 4.2 Tdi Q7 was well worth it.
Worked out at about £650 and would have cost more than that to fix the DPF sensor. Car is quicker, more responsive, a little bit more fuel efficient and has developed a lovely subtle V8 purrrr... I was a bit dubious to be honest, but now I've had it done once any can that has a DPF failure I'd take the same route no questions I almost wish my A8 had a problem then I could justify the 'fix'...
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For parts enquiries and Forum User Administration please contact customer services directly, not me - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537 The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones. The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff...... The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous..... The First 20 Audis: 2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey, 2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue, 2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue, 2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey, 2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6, The Second 20 Audis: 2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue, 2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black , 2007 TT Roadster, 2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black, 2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi) 2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black Most Recent Audis: 2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8 Everything Else 1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance |
#4
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Quote:
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
#5
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A chap we knew locally has had the same issue on his Q7 and he tried the long drive high revs method and it has cleared his and not come back to date. Might be worth a try at that first Richard as the easiest fix, then a regenerate cycle next with VCDS then if no luck go down the remove, code out and remap route
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Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs |
#6
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Can't do the long drive/high rev thing as it won't let me above 2500 really as it's in limp mode. All the reports I'm reading seem to suggest that once it's at this point, unless you strip and clean them (not a guaranteed fix), then you could potentially burn the car down with a forced regen due to the increased temps as the regen on these engiines means you sit stationary for 40 minutes.
£850 all in for the stage 1 shark map and DPF removal from Brotek seems fairly reasonable and risk free (oh..and 50 free horses too)
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#7
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I see no reason why the 4.2's DPFs shouldn't be cleaned like those on the 2.0.
Here is a german thread on the cleaning of the 2.0 with important tips as how to force start regen, then pressure clean them DIY. http://www.a4-freunde.com/showwiki.p...spuelen&page=2 VERY IMPORTANT: Before removing, start a forced regen via VCDS, then immediately stop and remove. There can't be any oily residues in the DPF, as this prevents pressure cleaning and will destroy it. Every opening for difference-pressure-sensors, Lambda-sensor and Temp-Sensor have to be closed with screw or appropriate measures. Clean with a rotary nozzle AGAINST the flow of exhaust gases. Use pressurized air to dry. Then some hours on a radiator. Use some non-stick medium for the screws when reattaching. There is some info, as how to set the Ash-amount in VCDS, but I haven't found the according blocks in VCDS myself yet for the 4.2. If needed, I can translate more tomorrow, as I am off for another Audi-meet. |
#8
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I have a 3.0 TDi, and had the DPF hollowed out by a small VW specialist.
(it is a catalyst and DPF combo) with a small catalist before the larger DPF all in one unit. They removed it and used a crow bar to smash out the internals in the back yard then refitted it. The man who did it was as black as your hat and so was the floor. He said he never wanted to do that again! They got some mobile chipper in to remove the DPF software. Unfortunately, as I wasn't quick enough taking it in, the back pressure blew the turbocharger centre gasket between the two halves, so had to get a new one of those fitted too. Has better performance, not sure if it was remapped at the same time, but mpg is no different. |
#9
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It's going into BroTek week of 23rd as that's the first date they have, so it's a fortnight in the Volvo for me as I don't want to drive it about and risk further damage. I could try the cleaning method, but looks like it'll be a barsteward in mine as there looks to be a long piece of exhaust pipe on the back of them.
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#10
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So what about the planet maaaaaan? You shouldn't have bought a heavy particulate, global dimming, tactor fuelled car if you're just going to remove parts that help keep my kids lungs free from the nasty pollutants those oil burners chuck out
Once deleted tho would you (legally) have to get the car reclassed tax wise as it must be a heavier pollutant or is it not, as it's done on CO2 and the DPF removes the bits that kill my kids?
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1996 A8 4.2 QS. Bose, Solar roof, um...um... rally sport towbar. Now gone to a new home as the Traders 8. Bright yellow bus o love. |
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