64 plate Audi A6 190bhp ..... DPF issue
Discussion
After a couple of "certain to fix" bills from garages which didnt fix, i asked Audi for a price for a new DPF............£1250
they wont tell me the part number
it wont go away after ragging it and cleaner in tank didnt work...
soot is above 10% at sensor so it wont self-regenerate and a forced regen lasted 10 miles
there are DPF's on Fleabay from £150 (new)
any ideas?
The DPF is usually designed to last the life of the vehicle. If it's getting blocked, it is probably because of a fault elsewhere on the engine and not because there was anything wrong with the DPF itself. Replacing the DPF without correcting the underlying fault is likely to be a waste of time and money since the replacement is going to suffer exactly the same problem.
Only way to sort that would be to remove and manually clean, I am not offering my services but I run a garage and bought a test bed dpf cleaning machine, the amount of crud that comes out of a blocked dpf is unreal.
Basically we add a cleaning agent to the intake side of the dpf and let it sit for 30 minutes, it then gets blocked up and an ultra high pressure of water and detergent gets forced through the filter, after many attempts the fluid comes out clear, refit it to the car and force a regen, never had one come back up to now.
The test bed is that powerful you strap the filter down, the first one I didn’t and I also got a dpf wash.
There will be a local garage that will offer this service I am sure.
Carl
Basically we add a cleaning agent to the intake side of the dpf and let it sit for 30 minutes, it then gets blocked up and an ultra high pressure of water and detergent gets forced through the filter, after many attempts the fluid comes out clear, refit it to the car and force a regen, never had one come back up to now.
The test bed is that powerful you strap the filter down, the first one I didn’t and I also got a dpf wash.
There will be a local garage that will offer this service I am sure.
Carl
Audi quoted £1250 for a new DPF but only £78 inc vat to fit it, obviously a quick job...
ive told him from now on, only use branded fuel, stick some additive in the tank and see its oil changed every 10k miles
it cost £285 for a blast/clean/forced regen, on its regen loads of crap flew out
ive told him from now on, only use branded fuel, stick some additive in the tank and see its oil changed every 10k miles
it cost £285 for a blast/clean/forced regen, on its regen loads of crap flew out
GreenV8S said:
Removing the DPF would be an automatic MOT failure, though, and driving the car like that would be illegal, wouldn't it?
As would the countless cars out there driving with their cat removed....and any other number of mechanical defects ( nevermind the millions of defective blind drivers out there that the authorities totally ignore )stevieturbo said:
As would the countless cars out there driving with their cat removed
It wouldn't pass a straight MOT like that though, either with a decat or removed DPF. I understand the MOT updates in 2018 are explicitly aiming to tighten the checks in this area.
Just want to be clear that if the OP is being advised to eliminate the DPF it would be illegal to drive like that and there is a reasonable chance of it being caught at MOT time.
Upatdawn said:
after 150 miles the light came back on...
If the DPF has blocked then this does not mean the DPF was faulty, it means there is a fault somewhere which is ending up with dirt in the DPF. Replacing it only hides the symptoms, it doesn't fix the underlying problem that caused the DPF to block. GreenV8S said:
The DPF is usually designed to last the life of the vehicle. If it's getting blocked, it is probably because of a fault elsewhere on the engine and not because there was anything wrong with the DPF itself. Replacing the DPF without correcting the underlying fault is likely to be a waste of time and money since the replacement is going to suffer exactly the same problem.
On the abMWs I’ve had they start life with a 150,000 conditioned based lifespan. So lots of short town driving would reduce it whereas lots of long driving on motorways will mean it lasts 150,000 Miles (or more). They are a service item.
OP how many miles have you done with the car?
Belle427 said:
I can’t comment on the legalities of removal but how does the mot tester prove it’s been gutted if there isn’t any evidence?
Your vehicle will get a major fault if the MOT tester:can see smoke of any colour coming from the exhaust
finds evidence that the DPF has been tampered with
https://www.gov.uk/government/news/mot-changes-20-...
silentbrown said:
Belle427 said:
I can’t comment on the legalities of removal but how does the mot tester prove it’s been gutted if there isn’t any evidence?
Your vehicle will get a major fault if the MOT tester:can see smoke of any colour coming from the exhaust
finds evidence that the DPF has been tampered with
https://www.gov.uk/government/news/mot-changes-20-...
Upatdawn said:
Audi quoted £1250 for a new DPF but only £78 inc vat to fit it, obviously a quick job...
On the ramp, up in the air, unbolt old, bolt new, down, talk nicely to the computer. Half an hour's labour...Upatdawn said:
ive told him from now on, only use branded fuel, stick some additive in the tank and see its oil changed every 10k miles
Perhaps more to the point, use the damn thing properly - decent runs regularly, not just pootling the school run, never getting warm.TooMany2cvs said:
Perhaps more to the point, use the damn thing properly - decent runs regularly, not just pootling the school run, never getting warm.
Oddly my school runs in my E class are the best for my car...(500 miles a wek)The A6 is waiting for 1
Edited by Upatdawn on Thursday 5th April 14:55
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