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Old 22nd May 2012, 11:01 PM
gninnam gninnam is offline
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Friend has just taken his A6 2.0L TDi into the garage today as last week a light appeared on his dash, then 60 miles later the car went into limp home mode!!

His is a 2007 model and he was told that in 2007 new legislation for emissions was released in the UK and this newer filter had to be fitted to all new diesels.
It has cost him 300 to get it sorted and was told that expect to be back in 12 months time - every 12 months.

Its due to the unit needing to be at a certain temperature to work - clean itself - but the bloke (at an Audi independant) reckons that it never happens.........

Does the A8 3.0 and 4.2 TDi's suffer from this also? And is the guy talking out of his @rse

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Old 22nd May 2012, 11:08 PM
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From what I've been told the DPF cleans itself every 150 miles or so by dousing the filter with lots of diesel and burning the crap off it at intensely high temperatures
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Old 22nd May 2012, 11:33 PM
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briang9 briang9 is offline
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maybe needs to try a bit of spirited driving

http://www.dailymail.co.uk/news/arti...ST-enough.html

or tell him to get shot of it and buy a "proper" car powered by "proper" fuel
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Old 23rd May 2012, 08:37 AM
PsYcHe PsYcHe is offline
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I think both the 3.0 and 4.2 have DPFs.. They can be coded out as part of a map process.

The issue is people buy diesels and just do the school run in them, so the engine never reaches operating temperature for long, which is what's needed for the DPF cycle to work. Hence why over the last 6-7 years, there's been regular stories of people having to pay for new DPFs when they're not running the car long enough.

30-40 miles every other weekend should be enough as keep it clean. But it needs to really be motorway miles at a decent speed to allow car to warm up and DPF clean process to kick in
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Old 23rd May 2012, 08:49 AM
HPsauce HPsauce is offline
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Quote:
Originally Posted by PsYcHe View Post
The issue is people buy diesels and just do the school run in them
There'll always be people who don't research or don't understand the issues, but it's been pretty standard advice for a fair while now that diesels are not worth the extra costs of purchase and maintenance for low-mileage (and especially short trip) drivers.

On the other hand, with a few exceptions, they're the default option for bigger cars, unless you have "specific requirements".
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Old 23rd May 2012, 08:59 AM
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I spoke with a mechanic last week regarding coding out the DPF and was told not to do it. Excess smoke and soot on the tailpipes don't appeal to me
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Old 23rd May 2012, 02:43 PM
ainarssems ainarssems is offline
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Quote:
It has cost him 300 to get it sorted and was told that expect to be back in 12 months time - every 12 months
I wonder what they did for 300. Emergency regeneration should not cost more then 1 hours labour and new DPF would be in 1000 range for part alone.
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Old 23rd May 2012, 03:43 PM
gninnam gninnam is offline
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Thanks everyone for your replies.

Quote:
Originally Posted by ainarssems View Post
I wonder what they did for 300. Emergency regeneration should not cost more then 1 hours labour and new DPF would be in 1000 range for part alone.
I think he mentioned a new senor also?
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Current cars:

Audi TT Mk1 225 - now with coilovers and a 7inch touchscreen infotainment centre

Ford Focus ST-2 Mk3 (the wifes)

1972 T2 Bay Window Camper (Slow)

===========================

Gone but not forgotten

Ford Focus ST170 (Rust)
2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member)

2000 A8 FL QS 4.2 (with RNS-E - Nice) (Engine poorly so sold on to be brought back by someone who has the time)

2000 Ford Focus 1.8 Zetec (CD Changer) (wish I hadn't sold it now ... )

2001 BMW (sorry) 325 Coupe (the wifes - she didn't like it....)
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