Diesel Particulate Filter

[MidnightDog]

There are definitely some on there -
VW GOLF A3 2.0TDI EXHAUST CATALYST DPF - 1K0 254 703 GX | eBay
VW GOLF DPF DIESEL PARTICULATE FILTER 2.0 TDI 2005-2008 BMN ENGINE DPF & CAT | eBay
Volkswagen VW Golf 2.0 Diesel Particulate Filter DPF2004-on** VWF146* BMN 170bhp | eBay
VW GOLF 2.0 (BMN) 02/04 ON DIESEL PARTICULATE FILTER DPF | eBay
Rußpartikelfilter Partikelfilter Skoda Octavia 1Z | eBay

Dont think first one is right but it says BMN Golf.

Well, that's embarrassing. I didn't know my eBay skills were so poor.

Thanks Jazd - I'll probably try to order one myself rather than pay VW prices, since they are available. Much appreciated

[jazd]

Well, that's embarrassing. I didn't know my eBay skills were so poor.

Haha the trick is selecting "world-wide", search descriptions and also search ebay.de and ebay.co.uk as some sellers dont list as posting to Australia but will if you message them and ask.

Also helps to search for the part number with and without spaces!

[Diesel_vert]

Check this out - http://homepage.ntlworld.com/h5djr/e...xhaust+dpf.pdf

According to that PDF file, it would appear that the correct part number for your 2.0 125 kW (engine code BMN) is 1K0254703FX.

But whatever the differences between the LHD, RHD, FWD & Quattro versions, I'm guessing the actual particulate filter would be identical??

[Gigitt]

Diesel_vert... You dont happen to have a 'file' containing a Jetta 125TDI 'CEG' engine code for a DPF part number?

[Diesel_vert]

Diesel_vert... You dont happen to have a 'file' containing a Jetta 125TDI 'CEG' engine code for a DPF part number?

I think you mean CEGA. Part number is 1K0254703PX. I have no idea what the differences are though.

I've found this site (http://vagcats.info/base/se/3/21/498/2/7472) but it doesn't really add any new light into it.

[Gigitt]

I think you mean CEGA. Part number is 1K0254703PX. I have no idea what the differences are though.

I've found this site (Êàòàëîã àâòîçàï÷àñòåé VAG) but it doesn't really add any new light into it.

Nope My Engine code is CEG as per the Build Sticker in my Service Schedule, and Also the sticker on the Timing belt cover.

[Diesel_vert]

Nope My Engine code is CEG as per the Build Sticker in my Service Schedule, and Also the sticker on the Timing belt cover.

Well, either way, there is only one engine with an engine code that starts with the letters CEG.

Anyway, found the relevant info for your car (Êàòàëîã àâòîçàï÷àñòåé VAG). It looks like the CEGA engine as fitted in a 2011 Jetta only uses the part number 1K0254703PX.

[Gigitt]

I think you mean CEGA. Part number is 1K0254703PX. I have no idea what the differences are though.

I've found this site (Êàòàëîã àâòîçàï÷àñòåé VAG) but it doesn't really add any new light into it.

Looking at that very informative site...
found that the part number under 2010 Jetta CEGA is 1K0254703PX (RHD) 85,814.47 RUB = 2,814.58 AUD
(same part number under 2011 Jetta 1k)

---------- Post added at 07:15 PM ---------- Previous post was at 07:11 PM ----------

Well, either way, there is only one engine with an engine code that starts with the letters CEG.

Anyway, found the relevant info for your car (Êàòàëîã àâòîçàï÷àñòåé VAG). It looks like the CEGA engine as fitted in a 2011 Jetta only uses the part number 1K0254703PX.

Yep found that,
thanks.

[MidnightDog]

FFFFFFFFFUUUUUUUUUUUUUUUUUUU-


2-day trip to Sydney was heartbreakingly pointless. VW/Audi specialist shop and they couldn't find anything wrong. I found it impossible to convince the mechanic that the car wasn't driving beautifully despite the fact that it judders slightly from time to time in certain rev ranges at low speeds. He seemed to think that's just a characteristic of diesels.

The car's now lost all the power that the tune gave it so it drives pretty much like stock, but of course he hadn't driven it after the tune so I couldn't seem to convince him that it had in fact lost power. The economy is also back to near-stock - getting about 5.8L/100 at 110.

Software obviously doesn't change once it's installed, so the gradual power loss over the 10 days since the car was tuned has to be exhaust-related, right? Mechanic also refused to do a forced regen as he said it was bad for the car to do it too often and it had been done very recently.

Their software showed the DPF soot load within the normal threshold. It also showed no fault codes whatsoever for the G450 sensor. But perhaps that in itself doesn't mean it's not broken - does anyone know if the G450 sensor even has fault codes or just relies on the DPF warning lamp? I know you've messed around with this sensor, Jazd - do you think it could be responsible for gradual loss of power even if the DPF itself is working fine? The symptoms the car's displaying just don't make sense to me.

I guess I'll just try to get the sensor replaced and hope that fixes the problem. I really am about ready to aim this car at a cliff and give it a big push. I could make it look like an accident...

[h100vw]

FFFFFFFFFUUUUUUUUUUUUUUUUUUU-


2-day trip to Sydney was heartbreakingly pointless. VW/Audi specialist shop and they couldn't find anything wrong. I found it impossible to convince the mechanic that the car wasn't driving beautifully despite the fact that it judders slightly from time to time in certain rev ranges at low speeds. He seemed to think that's just a characteristic of diesels.

The car's now lost all the power that the tune gave it so it drives pretty much like stock, but of course he hadn't driven it after the tune so I couldn't seem to convince him that it had in fact lost power. The economy is also back to near-stock - getting about 5.8L/100 at 110.

Software obviously doesn't change once it's installed, so the gradual power loss over the 10 days since the car was tuned has to be exhaust-related, right? Mechanic also refused to do a forced regen as he said it was bad for the car to do it too often and it had been done very recently.

Their software showed the DPF soot load within the normal threshold. It also showed no fault codes whatsoever for the G450 sensor. But perhaps that in itself doesn't mean it's not broken - does anyone know if the G450 sensor even has fault codes or just relies on the DPF warning lamp? I know you've messed around with this sensor, Jazd - do you think it could be responsible for gradual loss of power even if the DPF itself is working fine? The symptoms the car's displaying just don't make sense to me.

I guess I'll just try to get the sensor replaced and hope that fixes the problem. I really am about ready to aim this car at a cliff and give it a big push. I could make it look like an accident...

With the sensor, the ECU has to recognise that the output is wrong in some way. It might be open circuit inside and providing no output at all, shorted always giving a high output or maybe a fixed output that isn't changing. Those are just examples.

http://www.vwwatercooled.org.au/forums/f28/help-exhaust-pressure-sensor-1-g450-signal-too-high-62596.html

Google G450 sensor and have a read.

Very difficult to diagnose over the internet. Don't envy your position but don't think it's time to park on a hill with the handbrake off yet.

Gavin

[jazd]

As Gavin said, there are errors for "signal too high", "short to ground" and "intermittant". It would be a bit odd if your sensor was playing up without one of those errors showing up. Still for the sake of $70 or what it is I'd replace it and see what happens. Be sure to do the adaptation in VCDS afterwards.

Also check out the stored values in VCDS for soot and ash loading, there are a few more too. Also check the values coming from the temperature sensors seem OK, there are three on the DPF.

Personally I'd remove the DPF as its more trouble than its worth, and I would say that because I removed mine myself today.

[MidnightDog]

As Gavin said, there are errors for "signal too high", "short to ground" and "intermittant". It would be a bit odd if your sensor was playing up without one of those errors showing up. Still for the sake of $70 or what it is I'd replace it and see what happens. Be sure to do the adaptation in VCDS afterwards.

Also check out the stored values in VCDS for soot and ash loading, there are a few more too. Also check the values coming from the temperature sensors seem OK, there are three on the DPF.

Personally I'd remove the DPF as its more trouble than its worth, and I would say that because I removed mine myself today.

I don't have VCDS, a cable or a Windows laptop right now, so I'll see what I can do to find someone who does.

You're a brave man I'd like nothing more than to rip the DPF out and toss it into a skip - I really would. However, I'd feel bad about the pollution coming from an unfiltered diesel, and I'd also worry about getting picked up for it. Google seems to indicate the fine is somewhere over $10 000. There's no yearly pink slip inspection here in the ACT, but there is in NSW - how do you plan to get around that?

P.S. What effect has the delete had? I can live vicariously...

[bluey]

Just wondering - if the DPF core has a big hole through it and is otherwise connected up, will the engine computer be happy? Use a cetane improver to reduce the smoke.

Been reading that ash can be reverse flushed out of a DPF, using water or hot water or pressure washer. Apparently Peugeot owners have been doing it for years. See for example http://www.honestjohn.co.uk/forum/po...ex.htm?t=91801 http://www.peugeotforums.com/forums/...n-guide-18052/. Only hassle appears that the engine or subframe might have to be dropped to get the DPF out for a VAG TDI.

This article http://www.forddoctorsdts.com/articl...icle-07-03.php says "The ash can only be removed by physical means such as washing, pulsed or swirled compressed air."

[The_Hawk]

Google seems to indicate the fine is somewhere over $10 000. There's no yearly pink slip inspection here in the ACT, but there is in NSW - how do you plan to get around that?

In NSW I believe it's this part you are looking for:

NSW Legislation

In short, unless it makes things more efficient (in relation to emissions) you are not allowed to remove or change things or you cop a fine if caught.

Getting caught on the other hand is a whole different story. The pink slip tests do not currently include an emissions test so unless it's belching a pile of black smoke and the testing agent thinks it's "too much" it's unlikely to be questioned. Ditto for most other enforcement bodies... it is diesel after all... That said, things are changing and more and more diesel cars emit less and less smoke making the likely hood of standing out more of a threat.

I would be very interested in seeing what the output difference actually is and where it would put the vehicle on the emissions scale with and without the DPF/Tune to see exactly how much difference it really makes.

Bottom line, it's not legal and the fines are pretty big for screwing with the EPA

[jazd]

I'd feel bad about the pollution coming from an unfiltered diesel, and I'd also worry about getting picked up for it. Google seems to indicate the fine is somewhere over $10 000. There's no yearly pink slip inspection here in the ACT, but there is in NSW - how do you plan to get around that?

P.S. What effect has the delete had? I can live vicariously...

The smoke isn't bad at all, remember its still a modern diesel and runs quite clean. Also every other Mk5 doesn't have one either.

There is only a visual inspection and they wouldn't know what they were looking at anyway, its not replaced by a down pipe, I hollowed it out and welded it back up.

Revs much more freely at higher rpm now, thats the main difference.

Just wondering - if the DPF core has a big hole through it and is otherwise connected up, will the engine computer be happy? Use a cetane improver to reduce the smoke.

No the ECU would not be happy. You need to modify the ECU code and switch off the DPF function.

Been reading that ash can be reverse flushed out of a DPF, using water or hot water or pressure washer. Apparently Peugeot owners have been doing it for years. See for example Peugeot 406 Coupe - new methods of cleaning diesel particulate filter? | Technical matters | Back Room Forum | Honest John DPF Removal and Clean Guide - Peugeot Forums. Only hassle appears that the engine or subframe might have to be dropped to get the DPF out for a VAG TDI.

Looking at the internals of the DPF I don't really see any reason why you couldn't wash it out or blow out the ash. You do not have to remove the subframe to the the DPF out of a Mk5 Golf. I disconnected the front right drive shaft, that gave us enough room to drop it out the bottom.

Getting caught on the other hand is a whole different story. The pink slip tests do not currently include an emissions test so unless it's belching a pile of black smoke and the testing agent thinks it's "too much" it's unlikely to be questioned. Ditto for most other enforcement bodies... it is diesel after all... That said, things are changing and more and more diesel cars emit less and less smoke making the likely hood of standing out more of a threat.

Exactly, very unlikely to get caught.