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PaulieT31TDi Profile
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X-TRAIL NEWBIE
 


Date Registered: 08-2008
Location: Brisbane
TOTAL POSTS: 54
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Re: Particulate filter error resulting in MIL light


Peugeot actually use an accelerant for the DPF burnoff. It is topped up every 80,000km service I believe. Would mean that even if fuel quality was a little low the accelerant would result in high enough temps to burn off the soot.

I do some highway driving every week, I mentioned to the techs that I had not seen the DPF regen light since the car was near new, he said that was good, as it meant that it was able to do its job in normal operation without having to tell me to drive faster.

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2008 TL 6 Speed Manual, Precision Grey. Tint, Rubber Mats, Towbar, Roofracks, 2 x Thule Bike Carriers
5/Feb/2009, 2:07 pm Link to this post Send Email PM   Send Private Message
 
dronus Profile
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Date Registered: 08-2008
Location: Adelaide
TOTAL POSTS: 541
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Re: Particulate filter error resulting in MIL light


The way they explained it was that the ECU constantly monitors the condition of the DPF. If it has any soot on it, and the other conditions are met (speed, revs, temperature) it will start to regen the DPF until it is clear. It wont wait until the light comes on, it constantly clears it, bit by bit, even if it is just a little bit sooty. This would explain why you havnt seen the light - your highway driving would be enough to clear whatever had been accumulated, not allowing it to reach the stage where the light comes on.

While its important to allow the car to meet the conditions that it requires to regen, they also explained that burning bad diesel can choke up the DPF rapidly. Biodiesel and old diesel would be particularly bad..

Some good reading on wikipedia http://en.wikipedia.org/wiki/Diesel_particulate_filter

hope this helps..

dronus



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Current - GU Patrol
Old - '08 T31 Platinum TL Diesel Manual - Bells and whistles.
Older - '04 T30 Ti-L Auto
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5/Feb/2009, 8:25 pm Link to this post Send Email PM   Send Private Message MSN
 
popeclement Profile
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X-TRAIL FANATIC
 


Date Registered: 07-2008
Location: Perth, WA
TOTAL POSTS: 476
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Re: Particulate filter error resulting in MIL light


Hi Dronus

Did they ever explain what parts they replaced or was it simply labour and oil.

I have never had the warning light come on and so far I have in 18000kms only used BP diesel - I believe they refine it here in WA.

John

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X-916, VW Golf 90TSi manual, limestone grey, no extras
2008 TL dc i, manual, twilight; full set bash plates, jaos strut bar
- traded
5/Feb/2009, 9:32 pm Link to this post Send Email PM   Send Private Message
 
dronus Profile
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Date Registered: 08-2008
Location: Adelaide
TOTAL POSTS: 541
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Re: Particulate filter error resulting in MIL light


Hi John, no they didn't let on.. im putting it down to either the ECU didn't trigger a regen, or bad fuel.

Good idea, ive found the BP the way to go..

---
Current - GU Patrol
Old - '08 T31 Platinum TL Diesel Manual - Bells and whistles.
Older - '04 T30 Ti-L Auto
X-966
9/Feb/2009, 4:48 pm Link to this post Send Email PM   Send Private Message MSN
 
hermit53 Profile
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Date Registered: 02-2009
Location: Varese, Italy
TOTAL POSTS: 10
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Re: Particulate filter error resulting in MIL light


Hi all,

My 5+ AUD worth of experience with the DPF contraption....

My DPF system went belly up due to quite a different cause; a non-standard air filter! According to Nissan, not enough air flow caused the sensor to go haywire, which resulted in no regen for ages. In the end it all blew up in my face and 4 forced regens and AUD 2,500 worth of new parts later it was fixed emoticon
No way Nissan covers it under warranty!!!! I am now trying to get a certificate of the filter supplier FRAM that their supply complies with the Nissan standards, so I can at least get part of my money back! Mind you, it's a long story as to why, but obviously any car manufacturer will use any excuse to get out off their warranty obligations.

So apart from diesel fuel quality, the timely service of the air filter is very important to keep the DPF working as advertised. If you want to use non-factory air filters or systems, you better make sure there is a certifcate of compliance to go with it!! By the way, weird that on the T31 they talk about a minimum speed of 65km/h to get a regen, on the T30 it's 80 km/h for at least 20 minutes. Hey, maybe there's a argument to entice the local governments to increase speed limits in order to help the environment!!!

As to the diesel quality, do not believe it is that much better in Europe! There are many additives on the market to improve the fuel quality and bring it up to spec for common rail systems and DPF. A tip from experienced insiders (like technician working on Ci engines all the time, remember 43% of the cars in Europe are diesel powered), mix 1 to 1.5 liter of petrol with a full tank of diesel! Works a treat and keeps you out off trouble. I do it all the time, not only in winter. A hell of a lot cheaper than the additives as well emoticon

Happy regenerating to you all emoticon

---
Hermit53
2007 T30 2.2 DCi Columbia Sport (original sunroof and roof railing with integrated drive lights), with Maxe half nudge and side-bars. More add-ons soon...
20/Feb/2009, 6:46 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Particulate filter error resulting in MIL light


quote:

hermit53 wrote:
My DPF system went belly up due to quite a different cause; a non-standard air filter! According to Nissan, not enough air flow caused the sensor to go haywire, which resulted in no regen for ages.



I have never heard of something more silly than this to be honest. It's like saying that swapping an air filter of a petrol version xtrail will have a chance to have the catalytic converter blown, which is impossible and I would have challenged Nissan to prove it in your case.

Nissan diesel are not the only cars which run with different types of air filters than OEM and it should no relation at all to the DPF or the sensors.

K&N diesel filters for example clearly show compatibility with the T31 and T30 diesel engines and it's back by a life-time warranty.

The T30 diesel had more problems than any other Nissan model, so the last thing Nissan should do is blame a simple air filter swap for a dead sensor. They have been forking out millions on dead turbo replacements for the T30, so I reckon they're trying to recover some of their losses by blaming other components.

---

20/Feb/2009, 9:12 pm Link to this post Send Private Message MSN Blog
 
hermit53 Profile
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Date Registered: 02-2009
Location: Varese, Italy
TOTAL POSTS: 10
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Re: Particulate filter error resulting in MIL light


quote:

jalalski wrote:

I have never heard of something more silly than this to be honest. It's like saying that swapping an air filter of a petrol version xtrail will have a chance to have the catalytic converter blown, which is impossible and I would have challenged Nissan to prove it in your case.




Neither have I.... Don't worry, my (very good looking) lady lawyer has sharpened here pencils and them some. Nissan are in for a treat 8(

Thank the gods, I have the latest liquid cooled turbo. Nissan indeed had a major with the Garretts they used on the earlier models.

---
Hermit53
2007 T30 2.2 DCi Columbia Sport (original sunroof and roof railing with integrated drive lights), with Maxe half nudge and side-bars. More add-ons soon...
20/Feb/2009, 9:24 pm Link to this post Send Email PM   Send Private Message
 
dronus Profile
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Date Registered: 08-2008
Location: Adelaide
TOTAL POSTS: 541
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Re: Particulate filter error resulting in MIL light


On the way to work this morning my DPF light came on.

It stayed on until i managed to get out to Port Wakefield road and get upto 90kmph. There seemed to be a momentary lag in power, the smell of diesel and then the light went off. The person who was tailgating me seemed to drop back a bit too, maybe it smelled too much?

Light has stayed off, did some country driving this afternoon which probably helped too.

---
Current - GU Patrol
Old - '08 T31 Platinum TL Diesel Manual - Bells and whistles.
Older - '04 T30 Ti-L Auto
X-966
27/Mar/2009, 3:58 pm Link to this post Send Email PM   Send Private Message MSN
 
popeclement Profile
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X-TRAIL FANATIC
 


Date Registered: 07-2008
Location: Perth, WA
TOTAL POSTS: 476
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Re: Particulate filter error resulting in MIL light


Hi Dronus - I am surprised to hear your warning came on again. Having done 24000 trouble free k's I wonder if can be related to the diesel quality. I have only fed it BP

John

---
X-916, VW Golf 90TSi manual, limestone grey, no extras
2008 TL dc i, manual, twilight; full set bash plates, jaos strut bar
- traded
7/Apr/2009, 10:48 pm Link to this post Send Email PM   Send Private Message
 
fangios Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 08-2008
Location: Mornington Peninsula,Victoria
TOTAL POSTS: 104
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Re: Particulate filter error resulting in MIL light


Likewise, I have not seen my light come on in 25,000km. But I have fed it a mix of fuels, whatever happens to be convienient. Mostly Safeway (caltex), but various other service stations and no sign of trouble at all.



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X-Trail TS DC-i 6 speed manual
Electric Blue, cargo barrier, tow bar, reverse sensors, Rhino heavy duty aero roof bars and baby seat!
7/Apr/2009, 11:03 pm Link to this post Send Email PM   Send Private Message
 


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