Dpf/Egr cleaning.

[ashmore]

It looks like I will have to replace the dpf on my Audi. I've seen an advert for a firm called TerraClean. They suggest that the filters can be cleaned. What do you guys think? I wasn't aware that they could be cleaned! It's probably a load of rubbish. terraclean.co.uk

 

[Simon Chiles]

It looks like I will have to replace the dpf on my Audi. I've seen an advert for a firm called TerraClean. They suggest that the filters can be cleaned. What do you guys think? I wasn't aware that they could be cleaned! It's probably a load of rubbish. terraclean.co.uk

Are you sure? The DPF filter said it was clogged on my Golf ( full of ash, not just needing a regen ) however I was told that they are programmed to say that. We gave ours a full regen then told the ecu it had a new dpf filter and it’s been fine ever since.

 

[Mursal]

What did you use to tell it about the new DPF, thanks

 

[wold-topper]

google the dpf doctor he is a reliable guy

 

[ashmore]

Are you sure? The DPF filter said it was clogged on my Golf ( full of ash, not just needing a regen ) however I was told that they are programmed to say that. We gave ours a full regen then told the ecu it had a new dpf filter and it’s been fine ever since.

To be fair I'm not sure. The warning light is for "emission control unit" which could be anything from dpf to a sensor. And I'm getting prepared for the worst.
Out of interest how do you perform a regen? I thought it was done by the vehicle when it needed it, and couldn't be done any other way. Oh, and it gets a real thrashing regularly. [emoji6]

 

[wold-topper]

They can be forced to regen . a tool like VCDS can do it

 

[Hesston4860s]

To be fair I'm not sure. The warning light is for "emission control unit" which could be anything from dpf to a sensor. And I'm getting prepared for the worst.
Out of interest how do you perform a regen? I thought it was done by the vehicle when it needed it, and couldn't be done any other way. Oh, and it gets a real thrashing regularly. [emoji6]

Generally if you get the laptop plugged in you can force a regen though the diagnostic software.

 

[Finn farmer]

They can be forced to regen . a tool like VCDS can do it

This. Wife clogged up our Mercedes's dpf by only driving slow. I paid 70€ to our service center and they forced on the full regen with STAR console and was good after that.

 

[Timbo]

It looks like I will have to replace the dpf on my Audi. I've seen an advert for a firm called TerraClean. They suggest that the filters can be cleaned. What do you guys think? I wasn't aware that they could be cleaned! It's probably a load of rubbish. terraclean.co.uk

If it's done some miles, has been regenerating periodically just fine and it's full of ash the only solution is replacement or removal for cleaning. There is no alternative.

If it's full of soot because it's not been self cleaning, then fix the sensor or engine problem.

 

[Timbo]

To be fair I'm not sure. The warning light is for "emission control unit" which could be anything from dpf to a sensor. And I'm getting prepared for the worst.
Out of interest how do you perform a regen? I thought it was done by the vehicle when it needed it, and couldn't be done any other way. Oh, and it gets a real thrashing regularly. [emoji6]

Has this car had the emissions fix software installed ??

 

[Joe S]

As long as you haven’t left it too long might be worth trying this it worked for me. Get car up to running temp there drive around 15-20 minutes without EVER letting it drop blew 2000rpm.
If you look in the manual that’s what Audi says to do

 

[daveydiesel1]

Why not just get it remapped out. Done wifes zafira and so far so good

 

[Qman]

To be fair I'm not sure. The warning light is for "emission control unit" which could be anything from dpf to a sensor. And I'm getting prepared for the worst.
Out of interest how do you perform a regen? I thought it was done by the vehicle when it needed it, and couldn't be done any other way. Oh, and it gets a real thrashing regularly. [emoji6]

Do you thrash it like this?

 

[ashmore]

Do you thrash it like this?

Oh yes. Very good [emoji1]

 

[Will 1594]

Mm did the little fiat egr blanked off , took exhaust off cut end out took dpf out tig back up and remap , 95000 miles later and 5 mot no issues at all

 

[Timbo]

Mm did the little fiat egr blanked off , took exhaust off cut end out took dpf out tig back up and remap , 95000 miles later and 5 mot no issues at all

Does depend on how blind the mot man is and how rough the welding !

 

[Netherfield]

Has this car had the emissions fix software installed ??

Nothing to fix on those running adblue.

 

[Greenbeast]

As long as you haven’t left it too long might be worth trying this it worked for me. Get car up to running temp there drive around 15-20 minutes without EVER letting it drop blew 2000rpm.
If you look in the manual that’s what Audi says to do

This won't work once codes are already present, generally one the dash lights and codes are there it will not regen by itself, you have to perform a forced/static regen with a computer

 

[Greenbeast]

The DPF can be cleaned, i had mine done recently, took it from 80g soot (full) down to <10g

 

[Cowabunga]

DPF is normally self-cleaning but if something goes wrong, be that short cold drives as a rule or a mechanical issue, then it might need a forced regeneration by the dealer. Even a perfectly working DPF will eventually fill with ash from successful regenerations and will then need to be changed out for new filters. It should normally cover well over 100,000 miles before a new DPF is needed.

Trucks and larger tractors may have DPF's that can be removed from their housing and replaced by a cleaned exchange unit. This isn't the case with cars and light to medium vans, or tractors below about 150 to 200hp, depending on brand and model though.