Is my DPF nearly done for?

JabbaTheHut · 01-05-2017 9:41pm #1

Have to change the EGR valve in my 2011 Touran. The dpf has to be removed to do this, so I said I'd run a quick test to see what the dpf looks like. I used VCDS to get the values, but not sure if the readings are good or not.

The car has about 175k on it. I reckon it's due to be near time for the dpf to be giving hassle.

If it does look like it's in trouble, will cleaning it sort it? If so, can I do it myself, or do I bring it to a specialist?

Thanks

Edit: I know I could delete it, but would prefer to keep it country. The NCT can't be far off testing for DPF soon.

colm_mcm · 01-05-2017 10:11pm

Looks like it's got 52g of ash, limit is 70 and it only did a regen 10km ago.
I'm not a qualified rocket surgeon - but that doesn't look good from here.

JabbaTheHut · 01-05-2017 10:26pm

Yep. I read it that way, but wasn't sure if I my interpretation was right or not.

Would I be correct to say that at 175k, and 52g of ash, with a limit of 70g means it's not something I should worry about immediately? As in, per kilometer I have another 30k before I reach that 70g limit?

Or do I try and sort it out now?

demanufactured · 02-05-2017 12:09am

Would a forced regeneration not sort it?

JabbaTheHut · 02-05-2017 12:32am

Don't know.

I know that it has regenerated itself quiet a bit over the last short while. As you can see from my post, it had just finished one only a few mins before.

Would a forced regen manage to clean it better than a passive one?

mullingar · 04-05-2017 9:54am

What is the differential pressure under max load?

AFAIK it should be max 10hPa but will vary by manufacturer

mullingar · 04-05-2017 9:55am

What is the differential pressure under max load?

AFAIK it should be max 10hPa but will vary by manufacturer

JabbaTheHut · 05-05-2017 11:32am

Looks like it's -2 hPa

mullingar · 05-05-2017 11:42am

It's 150 hPa =15 kPa

Totally blocked, needs to be replaced or professionally cleaned out.

mullingar · 05-05-2017 11:43am

It's 150 hPa =15 kPa

Totally blocked, needs to be replaced or professionally cleaned out.

JabbaTheHut · 05-05-2017 2:25pm

Really? Sh1te.

It drives perfectly, and doesn't bring up any lights. It also depends on the revs. It goes up as the revs increase, under load.

What should I expect of it? As in, if I wait to get it cleaned, will it just block totally, and then am I up a creek without a paddle, and have to fork out a new one?

Toyotafanboi · 05-05-2017 7:51pm

JabbaTheHut wrote: »

Yep. I read it that way, but wasn't sure if I my interpretation was right or not.

Would I be correct to say that at 175k, and 52g of ash, with a limit of 70g means it's not something I should worry about immediately? As in, per kilometer I have another 30k before I reach that 70g limit?

Or do I try and sort it out now?

Afaik above 55g of ash and a natural regen is not possible and over 65g a forced regen is not an option either.

Is my DPF nearly done for?

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