DPF Problem

[jbnufc]

Hi guys new to this site but I had the problem with the DPF it went orange 2 times both times cleared after a good 20 mins over 50mph. It then came on red and would not clear I got the Jag extended warranty engineer out and he repaired with a laptop in about 1 hour and then took the car for a drive for 20 mins and it was fine. He told me the problem with the system is that it does not tell you when it is regenerating or when it has finished so we could be stopping the cars before it has finished I'm sure Jag could program it to tell you on the dash when it has finished. John.

[Old Peter]

Hi John, and Welcome to the Club.

 

I have not the DPF warning yet, but I do make a point of at least one long run a month. I agree that it would be nice for aDPF status to be available on the dash.

 

I have had a small issue with the EGR valves and found that a good blast with the S button engaged has cured it.

 

The other thing I have done is to have the Terraclean service done and it has made a world of difference both to performance and mpg.  I had to drive up to Sheffield two weeks ago using the A38 and M1, the latter having a 50 mph limit the whole way and I got 53 mpg, which I thought was pretty good.

 

Regards,

 

Peter.

[Trooper2142]

Up until now nobody has mentioned that if a regeneration doesn't work , diesel can get into the engine Oil there by raising the level above the maximum on the x type dipstick ( I've just realised. that the XF doesn't have a Dipstick ) but on the x type we keep the Oil Level below the maximum mark ( put 5·5litres of Oil in instead of 6 litres ) Because there have been instances where the engine has revved It's head off and you can't stop it ( don't know if you can stall the engine ) We advise members to check engine oil level quite frequently and look to see if there is any diesel contamination in the oil. ( Diesel is fed into the DPF to help with Regeneration and if it

Doesn't Regen the oil gets contaminated.)

Regards

Tom

[jag2]

hi chaps, all diesel cars have that dpf filter. and most all get probs if only used for short runs. thats when buying a second car for us i whent for a petrol . as it a (vauxhall) only gets used for shopping ect. no probs. charlie

[Old Peter]

I have heard of that, Tom.  A bit worrying.

 

Peter.

[frankiethebear]

Normally getting the engine hot is enough to start the dpf regeneration process.  In a manual running for around 20 minutes at between 3-400 revs should be enough to get everything hot enough.  It could be that the problem has already been fixed, going by some of the other posts, and it could be a simple reset.  Would going to an independent invalidate your warranty?  I don't know as ive only had my xf diesel for a week and still getting to know it and all its idiosyncrasies.

With my previous car i bought a dpf service pack consisting of various lotions and potions and it made an instant difference and improvement to the car.  It was a lexus 220d and the make and model were rather prone to issues with the egr clogging up and dpf problems. 

I'm new to the site and i don't know if i'd be breaking the rules by advertising, so if you want to drop me a line i'll give you all the details.  the pack costs about 50.00, but it worked for me.

 

cheers

 

frankie

[Old Peter]

Hi Frank,

 

Your experiences with an issue that us diesel owners care about are very useful, and is not advertising in my opinion.

 

I have not had the dpf problem, but I do get the occasional EGR valves sticking.

 

Regards,

 

Peter. 

[frankiethebear]

hi peter,

thanks for the heads up, don't want to cause problems within three hours of joining! As i said, ive only had the car for a week, so hardly surprising the have been no issues, but i'm talking from experience with a lexus 220d. on the 220 it was a very easy problem to fix, simply undo 4 bolts and two nuts and bingo the egr comes straight off.  i was surprised at the condition and the amount of carbon i found.  so it was straight in with the flat bladed screwdriver and 10 minutes later and a blast of wd40 and it was as good as new. refitting just the reverse of stripping, totally idiot proof.  Its a problem that so many people overlook, but so handy to keep an eye on it as it can save a lot of money and stress in the long run. 

the dpf is another matter however.  I bought an archoil engine, fuel system and dpf service pack and used it as directed.  the difference was almost immediate, almost because one or two of the products take time to work, but work they do.  There was an improvement in all aspects of my daily drive with the car sounding much quieter and an invisible emission from the back. The service pack cost around 50.00 but worth every penny in my opinion.  I checked and double checked and checked again on how the products work and didn't take their own info as gospel.  I come from a scientific background so i was able to make some sense of the various data available from various sites.  I did this because i won't ever use anything in the car without knowing as much as possible beforehand. Everything i read made sense and apparently is true, so i went ahead and don't regret it.

The best place to get the brew is from Powerenhancer.co.uk.  they are very open to communication and have a good working knowledge of how their products work.

I would have no hesitation in recommending them to all and sundry because for me, their stuff does exactly what it says on the tin.

regards

 

frankie

[frankiethebear]

forgot to say that i haven't looked for the egr on the car yet, so cant really comment on whether its an easy job or not.

[Old Peter]

Hi Frankie,

 

I am assuming that you have the 3 litre V6 Diesel, which is not a dissimilar engine to the 2.7 D in the s type.

 

In the V6 engine the EGR valves are situated at ether side of the engine and being from an accountancy background I always look for the most economic way of solving the problem.

 

I have found that a good blast on the A38 in 3rd gear with the revs over 2,500 rpm will cure the issue.  Also Wynns produce a spray that you spray into the air intake which also works.

 

I have not had any problems with the DPF [yet].

 

One of the things I did and found well worthwhile was to give the engine a terraclean service which did improve the performance and the mpg.

 

Regards,

 

Peter.

 

PS.  I forgot that you had said that your car had the 2.7 Diesel engine which is the same as my s type!

Senior moment!

[frankiethebear]

hi peter, thanks again for the info.  i will look into terra clean and see what i think before acting.

 

frankie

[guestmember1]

Just to say with the introduction of EU6c emission level, not only will the removal of the DPF invalidate the cars MOT, but actually the engine will go into limp home mode. EU legislation is making the ability to remove and circumvent the system impossible.

Also there will be a PDF fitted to petrols and Urea tanks added to spray, well, Urea into the exhaust systems......

[sortex]

I bought my xf about 8months and took it to Jaguar garage to have software update loaded to car, ever since then had alot of problems with the car so i took it back to Jaguar for them to sought problem out, and the problem was the dpf had been removed so i had to pay the £2000 to be put back in.

running a dream now,so if i decide to buy another jag ill make sure that i dont get stung again ie dpf.

[Old Peter]

Hi Stephen,

 

Removing the DPF is an automatic fail on the MOT, but as it is a visual inspection only some owners get away with it.  

 

But as you found, the software will show it has gone.

 

Regards.

 

Peter.

[sortex]

Yes very expensive lesson to learn,problem is theres no way you can check if the dpf have been removed,and i bought my car from a dealer with 6months warranty.I should of took it to jag dealer for updates before warranty ran out.

[Old Peter]

Hi Stephen,

 

I got my s type with a 3 months warranty from Stratstone, and kept a list of any small vagary from what I considered the norm, and after 9 weeks I took it back with the list, and to be fair, they sorted everything out.

 

The only problems I have had were two rear Bulb replacements and the EGR valve sticking, and to save a mucky job I have used a can of Wynnes EGR cleaner.

 

The 2.7 Diesel is a very good engine.

 

Regards,

 

Peter. 

[Old Peter]

Good post, Jim.  I do a lot of shorter runs, and although I do a longer run about every three weeks, I still find the Oil level on the higher side.

 

When I have my next service next month I will have the Oil dealt with as you suggest.

 

 I never use supermarket fuel and also like to drive my s type with a bit of verve occasionally,

 

Peter.

[Golfcarmad]

Hi,Hope you don't mind me chipping in on DPF issue.I had a Pug 307 HDI,I do 80 miles a day and usually around speed limit,yet my dpf failed and get you home was 20 mph.Pug wanted £900 + to fix,bought a new DPF off eBay for £130,fitted it myself (quite easy) another £25 for diagnostic/reset and cured.When I looked at my DPF it was full of a thick paste residue that we burned out and cleaned and my mate fitted mine into his 307 when he had same fault and it worked a treat.By the way,on the pug there is a separate tank for DPF cleaner fluid which is auto injected every time you fill up,not sure if XF has same,will investigate.

[Lord H]

Hi Paul

I think you will find that smaller engines cars have the fuel additive which I believe is only used when the DPF goes into a regen cycle and not all the time this is because they need extra help to regenerate the filter because they can't generate the heat that is required to burn it off whilst a 3L Oil burner can generate more than enough heat

Regards

Rich

[Golfcarmad]

Thanks for extra knowledge,just to say to replace a DPF is like replacing a small part of exhaust system-not that difficult.

[Luqa]

Bought my 2009 reg, XFS a year ago. often needed to do the 'regeneration run' that usually worked for a while, eventually DPF light and EML came on with restricted performance that would not clear.  Local independant garage did a diagnosis reporting DPF contained 82gr soot and required replacement, they fitted a pattern part and reurned car.

 

There was visible smoke and soot coming from DPF/exhaust joint, car returned and new 'gasket' fitted along with a sensor, all lights now out, car quieter but visible smoke from exhaust on acceleration or blipping throttle at standstill. A long fast run decreased the smoke but its still present.

 

Anybody had similar or care to comment, (mileage a bit over 83000)

it also has high fuel consumption.

 

Luqa

[Old Peter]

Hi Luqa, and welcome to the club.

 

I have never had that problem with my 2.7 diesel,  doing the regeneration run regularly.  I am wondering why your DPF was 82% full, having done all the proper things.

 

I have had a problem with my egr valves and found a product in Halfords to clean them without taking them out.  While I was there I saw a product that claims to clean the DPF.  I just wonder if you could try one of those products, give the car a bit of a blast, and see the result.  There might have been some traces of soot still left.  I think that it might be worth a tenner.

 

Let us know how you get on.

 

Regards,

 

Peter.

[Luqa]

Hi Peter

 

Many thanks for your response, the car did not smoke before the DPF/EML lights came on with restricted performance as well, the garage replaced the 82grm (full) DPF and said they had reset the sensors etc., there was no 'gasket' fitted to the new part and joint leaked, for this reason the car was returned to them.  They ordered and fitted a new 'joint' retested and found a faulty sensor, the work was completed and car returned to me.

 

The smoke is quite bad on hard acceleration, and because it didn't smoke before, I don't see how it can be 'sooted up' beyond the DPF, the DPF itself is supposed to eliminate soot, if working correctly how does a sooty emission get past it?

 

Research says the ECU needs to be told a new DPF is fitted and reset, am wondering if this was not done right, engine still thinks there is a problem and sets to regeneration mode to clear it, that would explain excessive fuel consumption and perhaps due to over fuelling the sooty exhaust.

 

Am thinking now to have it checked out by a Jaguar specialist garage using much better diagnostic equipment, and taking it from there. The supplying dealer previously had the car back under warranty and said they refurbished the turbo actuator, am wondering if this part is also the cause if 'repair' was not 100% successful.

[Old Peter]

Hi Luqa,

 

Yes - the ECU is an inquisitive piece of kit.  I think the repair might not have been done by the book by the supplying dealer.

 

I have heard that the DPF regeneration is helped along by diesel fuel and that it could cause too much unused fuel remaining in the engine Oil.  I found that with my s type last year  ---   the dipstick readings showed more Oil than there should be.  Your engine must be burning off the diesel that is excess.

 

Is the supplying dealer a Jaguar main dealer, as they should have the top of the raange diagnostic equipment.  There is a new member who has this equipment and is very expert in diagnostics, but he is based in Chesterfield which is a long way from Hampshire.  If he reads this he might be able to give you a clue.

 

Regards,

 

Peter.

[Luqa]

Hi Peter

 

Regret No supplying dealer is not a Jaguar franchise though operates several garages with associates across UK. They took car back to Leicester and sorted problem identified by a Jaguar independent in Southampton, they refused to pay local repair costs hence return to their main garage (though I responded to an advert in Hampshire) as I said they told me the turbo actuator had been refurbished.

 

The XF has no dipstick Oil is checked by instrument panel so i can't dip it to smell if contaminated, low ash Oil was used at service when DPF replaced, so almost new.