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Particle filter

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paultwymanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote paultwymanuk Quote  Post ReplyReply Direct Link To This Post Topic: Particle filter
    Posted: 23 Mar 2011 at 3:25pm
Hi all,
I am new to this forum but if it is as good as the jagaur one I will be a happy bunny. I have  2.0l diesel dci on an 08 plate. It has covered 35,000, miles. I have 2 problems with this car that the dealer is fairly non commital about. The first is that the particulate filter warning light comes one very 2 months or so. We can clear this by running it at 50mph plus for 30 mins or so. It is moer of an annoyance that anything else. But why does it come on so often. Surely that designed a car with urban traffic in mind? 
The second question is about the orange engine warning light that has now come on for a second time. The last time it came on the dealer blamed the engine oil and and the fact that is was bad and needed changing. This was 4 months after it was serviced. The oil was changed and now 3 months later it has come on again. Am I missing something here or does the oil really go bad that quickly.
Any advice greatfully recieved.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CraigQQ Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2011 at 4:09pm
Hi paul.
 
Welcome to the club.
 
sorry im not the most mechanically minded, and really don't know too much about diesels.
 
but that doesnt sound right to me mate, maybe an independant check is in order. RAC or something like that...
 
as said though im not the one to ask lol. so maybe im being stupid here with my suggestion
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mohawk Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2011 at 4:15pm
Didn't they bring out a patch for the engine management system to extend the period.
Mike the Nissan dealer might know thatErmm
Haven't seen him for a while thoughErmm
Oh i checked and he was here on the 21stThumbs Up


Edited by mohawk - 23 Mar 2011 at 4:16pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote UrbanNomad Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2011 at 4:39pm
You will find your answer in the diesel section mate, but to simplify if you mainly do a lot of town stop / start journeys soot will build up in the filter and can only be cleared as you stated or by the dealer doing a regeneration which is not cheap!

Hope this helps  Smile


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Post Options Post Options   Thanks (0) Thanks(0)   Quote HarryG Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2011 at 6:20pm
Welcome Paul
There are many posts regarding the DPF on the 2l diesel, however not many recently regarding blocking up.
If the engine managemaent light is coming on the dealer should be able to check what faults are stored in the memory of the ECU then recomend a course for action its seems strange the dealer saying the oil was dirty or whatever.
Did he do a full diagnostic check or was it just a recomendation on his behalf.
If you check in the diesel section there are many good topics regarding the DPF.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote paultwymanuk Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 8:38am
Hi again and thank you for the replies. I am off to the diesel secton to poke around. What I will say is that they keptthe car yesterday saying it needed a software upgrade to cure all its problems. We will see.
Again thnk you all.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote noki49 Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 8:52am
I'm sure I remember reading that if you have to have a dealer regen then the oil needs replacing. Not sure how or why, but it seems that a blocked DPF can contaminate the oil....
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cowpers Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 8:56am
Sounds like your DPF is working fine.  As someone said earlier with lots of stop start or short journeys the engine temperature does not get high enough to burn these particles off.  As the filter gets blocked back-pressure builds up which is detected and triggers the warning light.
 
It also sounds like you are doing exactly the right thing and the system is regenerating as it should do when you do your 'fix it run'.  The 2.0L diesel can't really be described as an engine designed for 'urban use'.  So as far as the DPF is concerned it seems to be working fine and you are doing all the right things to avoid the need for a dealer regen.
 
As to the oil issue...well it sounds like the software update might help that.  But don't expect the DPF to change its possible the time between lights coming on might increase but this will likely only be due to an increase in the back-pressure value that triggers the light.


Edited by Cowpers - 24 Mar 2011 at 8:59am
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paultwymanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote paultwymanuk Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 10:09am
hi all,
 
I don't seem to be able to post anything in the deiesel forum. Any ideas.
 
Are Nissan still charging £200 for a dealer regen? It sounds to me that we bought the wrong car. We do tow occassionaly but most travel is 15 miles to work. This whole idea of having a system that prevents pollution but then requires thrashing the thing to recover it seems stupid to me.
 
We were not told about the DPF and had I known then what I know now I would have bought a car without it. My experience with Nisaan has left me less than happy and I doubt they will get my business again.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote G5 BOY Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 10:21am
Welcome Paul Big smile.
 
As a newbie you are limited to what you can and can't do here.
 
A one-off contribution towards the running cost (min. £10) will give you complete freedom, access to supplier discounts and a nice warm fuzzy feeling inside.
 
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Soup Dragon Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 12:53pm
and a car stickerThumbs Up
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Post Options Post Options   Thanks (0) Thanks(0)   Quote paultwymanuk Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 1:00pm

Nice!!!!! so how do I make said donation.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tiffany Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 1:30pm
Nice!!!!! so how do I make said donation

Here ya go


http://forum.qashqaiclub.co.uk/how-to-contribute--step-by-step_topic485.html






Edited by Tiffany - 24 Mar 2011 at 1:32pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rupidoo Quote  Post ReplyReply Direct Link To This Post Posted: 15 Oct 2012 at 8:34pm
Ref DPF light, for 60+ k miles we never had a problem but we're doing lots of short journeys now and it's become more of an issue.  After having read the huge cost of getting it (temporarily) sorted at the dealer I looked around for an alternative.  A guy from work knows the proprietor of a local commercials garage who specialises in vehicle electrics, I took it down there and he hooked it up to the diagnostic machine, cleared the fault code from the ECU and put it on a high tickover for 30 mins,  fault cleared, he didn't even charge me for it.  When you realise how quick and simple the process is, the fact that Nissan dealers are charging £200 for a TEMPORARY fix to a well known fault is shameful.  He told me that next time it comes on, just take it out for a good run until it goes off again, which has happened once since and sure enough cleared after about 25mins and hasn't returned since.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vuli Quote  Post ReplyReply Direct Link To This Post Posted: 15 Oct 2012 at 8:53pm
he probably made force regeneration or how do you say.
I think they sugest, if zhe light for dpf show, drive for around 30km or more at higher rpm (3000), than everything will burn inside dpf.
I didnt try it yet, I didnt see even that light came on.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RayBanJockey Quote  Post ReplyReply Direct Link To This Post Posted: 15 Oct 2012 at 9:11pm
Sounds like an engine for me, having to drive really fast everywhere at high revs! Vroom :D


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Post Options Post Options   Thanks (0) Thanks(0)   Quote 2Fat2Bald Quote  Post ReplyReply Direct Link To This Post Posted: 15 Oct 2012 at 9:16pm
I do enough miles not to have DPF problems, but the earlier cars were known for it and - yes - I think there is a software patch that fixes it.

The problem with the oil *could* be related. Although I am unsure if their relationship is correlation or causation.

From what I recall the car will attempt to burn off the soot in the filter by heating up the exhaust gasses (by various means) to heat up the DPF and burn off the soot. If it can't do that then it will (after so many unnsuccessful attempts) put the DPF light on. If it still can't do it then it (somehow) dumps the Soot into the engine oil (I think - I can't see how it would do this!).

And also if the DPF is coming on then the car is probably being driven in city traffic quite a lot with lots of short trips. So you'd expect the oil to clagg up quite quickly.

To be honest, earlier diesel Qashqais were known for DPF problems (they were very early DPFs) - making it's "urbanproof" marketing somewhat ironic.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote the stig Quote  Post ReplyReply Direct Link To This Post Posted: 15 Oct 2012 at 9:37pm
hi paul before the qashqai i had a citroen picasso and that was a constant nightmare one of the many many faults was the D.P.F .ive never had a single problem with the qashqai but the only good advice i can give you is with any modern diesel with the D.P.F is drive it hard and try and keep the revs up it will do it more good than harm.i know its not very cost effective with the cost of fuel as it is but the cost for a forced regen isnt cheap.i think the whole D.P.F thing is a very poor idea and being a retired mechanic i get asked this question a lot of times "how can i stop the light coming on" and after following this advice most of them its cured the problem.
hope this helps  and welcome to the best forum on the planetThumbs Up
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Post Options Post Options   Thanks (0) Thanks(0)   Quote speculatrix Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2014 at 10:39pm
I think if you're regularly getting warnings about the DPF and needing to go for some Italian Tuning to burn clean the filter, then you probably need to do that for longer, as you're probably not clearing it fully.

It might also be worth checking the air filter, if the engine isn't breathing as freely as it should that might upset it? If this was a petrol engine, I'd definitely look for a poor filter as it can make the engine run rich, I'm not sure if it's the same for turbo diesels.
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