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Discussion Starter · #1 ·
Hi
As usual I have just jumped in without enough research and bought a 2010 N-tec 1.5 diesel Note with 27K on the clock.
The car to date is brilliant. I have just done a run and it returned over 60 MPG.
After I bought it I read this and another forum and was horrified to read of exploding diesel engines and problematic DPF s.
Are there any wise Nissan users out there who can provide me with any guidance or a list of DOs and DON'T s to avoid or at least minimise the risk of this happening to my car?
It is now out of manufacturers warranty. Is it a recognised problem and if so how do Nissan respond to these events?
HELP please Regards and thanks in advance.
 

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DPFs CAN be a nightmare but in everyday use are not a problem for the majority of users, so, first things first relax.



DPF problems appear largely on diesel vehicles doing lots of short trips where the DPF fails to reach its operating temperature.



The result of 'running cold' is a blocked filter in need of regeneration. Normally a good blast down the motorway will allow the DPF to regenerate and 'clear' itself but you still need to get the fault code reset (tip: try and find a friendly local independent with the kit to do this and avoid main dealer prices).



If the DPF is constantly run 'cold' then it will need regenerating by a service agent (I avoid the term dealer for obvious ££££ reasons). This can cost upwards of £200 and, at a dealer, upwards of £350.



If the DPF cannot be regenerated then, as this is now an MOT failure item (it WAS an advisory but is now a failure), it will have to be replaced at upwards of £1000.



So, in essence, if you do ONLY short trips then you MAY have DPF problems. If you do normal mixed motoring with a bit of dual carriageway/motorway driving adequate enough (30 minutes or so) to get the DPF up to temperature then you should be OK.
 

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and if the the dpf warning light does come on you have a short time to do one of those 30 minute trips to heat the thing up and clear it before it becomes a logged code.
 

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Nigel B said:
If the DPF is constantly run 'cold' then it will need regenerating by a service agent (I avoid the term dealer for obvious ££££ reasons). This can cost upwards of £200 and, at a dealer, upwards of £350.
There is normally a regeneration mode that is triggered from the service menu.

The car has to be parked on concrete, as it will melt tarmac, and set fire to grassland


Then the engine just redlines for about 20minutes.

You could do this yourself for a lot less than £200
 

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mnl said:
The car has to be parked on concrete, as it will melt tarmac, and set fire to grassland

Then the engine just redlines for about 20minutes.
I wouldn't have thought that running high rpm but virtually no load (i.e. very small throttle opening) would be particularly effective at heating up the exhaust system?

I'll never forget watching my Escort rally car being run "flat out" on dynamometer rollers with the bonnet open - the exhaust manifold & downpipe glowing bright orange is something you don't normally see
 

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Maybe they wind the boost up a bit as well


I've seen a Citroen in regeneration mode, and I'm glad that it wasn't mine
 

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I would repeat what others have said about short journeys with diesels with DPF's but haven't seen too many Nissans suffering, however I can tell you about a Kia Venga I had and it only reached 8000 miles before blowing up, and that was after 155 miles on motorway run, most of my journeys had been just in excess of 30 miles which I considered enough to regen the DPF...evidently not!!! I had done a numbe of journeys over the months back to Birmingham from Sussex so would have thought a regen would have taken place on those runs, luckily we were 15 miles from home when BANG...oil all over the motorway and the engine racing at 9000rpm out of control...sounded like an old Cavalier with the cams gone, this one blew the turbo...DPF..Cat and didn't do the intercooler too much good from what I was told.....it was a nasty experience I wouldn't want to go through ever again, having driven diesels over many years and gone through courses of making sure you fill your tank after journeys and a days working...( have you felt a diesel fuel tank after a run??? ) it can cook the oil and lead to vapour gathering in the tank....so elimintae that by filling the tank while it's hot...what I was always told on the courses over the years.....so sorry about the novel being written..... good thing the car was under warranty but was never the same after the repair....so I bought a Nissan Note petrol...after all those years of diesels...WITH NO DPF.... I've had to change ... it's not saying that you will encounter this.... but it's not a pleasant experience...as I video all my journeys...below is a still shot of the car I had... and the view you see is after the engine was turned off....it took two minutes to stop...after turning off....NOT A NISSAN please note...I should also add...if your car has a turbo..which most have these days...after a journey leave it running for a while for the oil to cool and cool the turbo....just don't turn a turbo diesel off after a run.






Edited by: rebus
 

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Discussion Starter · #8 ·
Hi All
Thanks guys for the advice. I will make sure I keep an eye on the motorway driving thing with my diesel
.
An interesting comment from "mnl" about the service menu regeneration procedure. Can I get access to this menu and run this regeneration programme? or do I have to go to a dealer? I suppose I could find a quiet corner and sit with my foot on the pedal for 20 mins but I am sure to get some funny looks.
A life of work and poverty induced by too many children has bred in me a deep aversion to expensive glitzy showrooms.
 

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In a word no it will have to be done with the Nissan consult system (main dealer tool)

dpf's need a good long run atleast 2-3 time a month so it regens it will also clear the cat
 

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Just once again to qualify what I said in a previous post about courses companies I had driven diesels for and their concern about you...and of course their diesels one is driving.... I will just post this link to hope it will enlighten you a little more as to owning and driving the diesel and of course for your own awareness.... this allows you to see a nice little 'Bug' that loves living in a diesel tank.

http://www.penninepump.co.uk/the-diesel-bug.html
 

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Discussion Starter · #11 ·
Hi rebus
Thanks for the info, I have had three or four diesels to date, the last one as a Rav4 with a DPF and no problems at all, it returned 40MPG plus

If I get microbes living in my diesel would be bad but if they get into my DPF it would be a disaster.
 

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Discussion Starter · #12 ·
Hi All
I have just had a chat with a guy who says he has had his DPF removed and this solved his recurring problems.
It has however some repercussions it is classed as a non standard modification and needs to be reported to the car insurance company, we all know what they will say.
Secondly it will/may increase the particulate emissions. The low road tax band is granted, I believe in recognition of the low emissions of particulates and CO2. This will probably need a reassessment.
It sounds like a difficult road to travel.
 

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Life is too short to start on reassessments for VED and as to insurance companies..........

I'd just do the requisite journeys to keep the DPF 'energised'.
 

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Well...having to spend extra time and money on doing miles that are an added neccessity seem to defeat the object of an economic diesel, more wear and tear of needless journeys just to clear the DPF, admitted the DPF is a very high priced purchase..one of my neighbours 4X4 has just had a nasty shock of £2800 quoted just to purchase...then it has to be fitted...NOT a Nissan I would point out.One has to work out I suppose which is the cheapest avenue to take.
 

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If I wasn't doing a lot of miles and a lot of long journeys then I wouldn't buy a diesel.

(and I don't, so I didn't
)
 

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I don't and I didn't, plus on the upside or downside petrol is cheaper than diesel so I don't really know who loses out petrol or diesel dpf
 

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Driven diesels for 15 years, but most unhappy with last one - bought for the worst of the Scottish winter, a Fiat Sedici.the DPF kept sooting up and for every 30 miles, I'd to do an extra 10 or so on fast roads to regenerate it. Several times went into limp-home mode, including one trip which usually took 2-3 hours and was in the car for over 6 hours. Eventually diagnosed but had to send to Italy for the part and car off road for over two weeks.

Very happy now to be driving a Petrol Note, for reasons outlined in previous posts.

I've a sneaking feeling that we will look back on fitting DPFs as a huge mistake; I think the market for older diesels now will be poor!

PK
 

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My Note is the first diesel with a DPF, but have had other diesel motors. I've done nearly 80,000Km so far, in under 3 years. And it hasn't touched a motorway.

No probs as yet.
 

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Discussion Starter · #20 ·
Hi Boysie
That sounds like a bit of good pro diesel news. What sort of driving are you doing to rack up that mileage without going on motorways? Is it long trips or is there a lot of stop/start stuff?
My car is also a 2010 DPF 1.5. We also have an elderly Ford Fusion petrol and I am starting to allocate the driving, short trips we use the Fusion and longer trips the diesel.
I think I am getting paranoid about this dam----- filter.
 
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