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AusSki Profile
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Date Registered: 03-2012
TOTAL POSTS: 11
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ODB II monitor to show DPF burn


Has anyone used an ODB II monitoring device like UltraGauge or ScanGauge on the Diesel to monitor whats happening wiuth the DPF burn, maybe to show when one is happening.
13/Nov/2012, 2:50 pm Link to this post Send Email PM   Send Private Message Blog
 
Exywarrior Profile
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Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re:


I haven't used any of the devices you can speak of, but I can tell very easily if my TL is in the middle of a DPF burn...the fuel consumption increases markedly for a number of minutes.
It's particularly noticeable on a freeway. The car will be humming along averaging around 6.5-7L/100km then you'll notice that the consumption is more like 10-11L/100km. This continues for a number of minutes then reduces back to the normal rate.
However I have to agree that it would be nice to have some sort of indicator light to tell you when a burn was happening...and I'm not talking about the DPF warning light which is more like telling you "let me do a DPF burn or else!".


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Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
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13/Nov/2012, 7:54 pm Link to this post Send Email PM   Send Private Message Blog
 
cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:


A scan gauge might be able to show you exhaust temperatures which could be an indicator of when a burn is happening.

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Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

14/Nov/2012, 5:07 am Link to this post Send Private Message
 
MrMez Profile
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Date Registered: 03-2011
TOTAL POSTS: 124
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Ahhhhhh... so THATS why the fuel consumption rises stupidly every now and then. I just figured it was a glitch and ignored it.
14/Nov/2012, 10:56 am Link to this post Send Email PM   Send Private Message Blog
 
dbobbyd Profile
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Date Registered: 01-2013
Location: Adelaide
TOTAL POSTS: 31
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Put my ultragauge on to my sereis 5 TL, it doesnt seem to be compatible for some reason, display shows info for 10 seconds, then blanks for 5 seconds then cycles the same. Anyone else tried an ulatragauge on their exy? It worked a treat on my last 2 diesels, an I30 and a colorado.

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2013 TL X-Trail Snow storm white.......
3/Feb/2013, 5:52 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 01-2009
TOTAL POSTS: 1384
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The increase in fuel consumption and the smell are usually enough to let me its done a regeneration. At least the regen process is nothing like the Isuzu trucks (used by NSWRFS for one). From all accounts its quite interesting the first time it happens when you're near the truck as unlike the exy it doesn't need to be driving along the open road at speed to allow it to happen....


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Alan & Phillipa
2008 X-Trail TL White Diamond
Plumpton NSW
Our Mods
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4/Feb/2013, 12:10 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 01-2013
Location: Adelaide
TOTAL POSTS: 31
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Not to take this post on a tangent but I spoke with service manager when the TL went it for its first service, apparently its normal for the nissans to blank out for 5 seconds when using an obdII monitor, during this time other systems are scanned such as abs etc. I changed settings on the ultragauge so it doesnt switch off the display during this time. An odd thing for nissan to do...........

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2013 TL X-Trail Snow storm white.......
10/Feb/2013, 12:20 pm Link to this post Send Email PM   Send Private Message Blog
 
Brotherontherun Profile
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Date Registered: 07-2013
TOTAL POSTS: 34
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Re: ODB II monitor to show DPF burn


Hey Guys,

So a guy at work had a 08 TL and suffered through 3 dpf replacements. In relaying his misery has put the fear of god into me about my new purchase and certainly took the shine off things.. I have been driving myself insane reading up on this which by the way has made it worst.

So I ask, can this monitor relay whether the exy is doing a DPF burn for a 13 TL? Or is there any other tool that would tell me when the exy is doing this burn?

Cheers



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Brotherontherun (X-3226)

2013 TL Snowstorm White, Auto
Now with 6.5 inch splits, 6.5 Co-axils, Amp & 10 Inch Sub
27/Aug/2013, 10:02 pm Link to this post Send Email PM   Send Private Message Blog
 
Exywarrior Profile
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Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re:


Yes, there is a way to tell when your TS or TL is doing a DPF burn. You will notice a marked increase in the fuel consumption during the period of the burn.
The DPF regen only takes a matter of minutes. The way it works is that the ECU reduces the performance of the turbocharger slightly and increases the amount of fuel going into the exhaust. The increase in exhaust gas temp caused by the reduced turbo boost causes the fuel in the DPF to ignite and burn off the soot.

It all occurs in a matter of minutes and all automatically.
The problem with DPFs occurs when people use their cars regularly for short runs or in lots of stop-start traffic every day without finding time or place to let the diesel stretch its legs for about 20 minutes.

I know a number of people who have a diesel X-Trail who have over 100,000km and never had the DPF replaced. I know others who have gone through a few of them.

The two big things are to always only use the correct grade of fully synthetic oil that is certified suitable for DPFs (this is critical); and make sure you let the car stretch its legs at more than 70kmh for about 20 minutes. In the manual car, don't drive around in 6th gear with the engine below 2000RPM.
All these will help you - you don't need to be concerned about the DPF, it's more the case that most Aussies have never had a car with a DPF before and don't drive the car properly. I was actually one of these people.
European cars have had DPFs for a number of years now but admittedly they have had better quality diesel than the stuff we get in Australia as well. It was only in 2009 that the standards of diesel in Australia were upgraded to reduce the sulphur levels.
I suspect your friend who had all the trouble with his DPF was primarily due to either the dishwater that he was running the car on, or the incorrect grade of oil in the engine.

Either way mate - watch your fuel consumption meter when a DPF burn is occurring - you will see it - and drive the car keeping the DPF in mind. It only requires a slight change in driving habits.

Hope this stuff helps.

Mark

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Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
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28/Aug/2013, 8:40 am Link to this post Send Email PM   Send Private Message Blog
 
Brotherontherun Profile
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Date Registered: 07-2013
TOTAL POSTS: 34
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Re:


Hey Mark,

Thanks for your response. I've changed my driving technique, by keeping the revs up giving it a harder time than I would normally (2500 - 3000 rpms) etc but I have not noticed the fuel consumption increase as you and other's have posted despite monitoring it. In fact my fuel consumption has gone down. That said, I do about 45 mins of travel each way to work with about 15 mins of travelling 80+ kms.

My biggest concern is turning the exy off during cycle... This said, I've just cracked 3000kms so I am still learning my way around this issue but yet experience or better said, noticed it.

Is it really that noticeable? Or should I invest in getting a monitor to alert me, if so is this monitor able to tell me?

 

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Brotherontherun (X-3226)

2013 TL Snowstorm White, Auto
Now with 6.5 inch splits, 6.5 Co-axils, Amp & 10 Inch Sub
28/Aug/2013, 8:14 pm Link to this post Send Email PM   Send Private Message Blog
 


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