SHOULD YOU REMOVE A DPF FROM YOUR DIESEL?
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- Опубліковано 19 лис 2021
- If You Own a Diesel, You Need To Remove Your DPF Now!
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I HAVE NOW FIXED THE ISSUE: ua-cam.com/video/Ff60sMnS5z8/v-deo.html
Change the back pressure sensor always the issue when it won’t regen
I totally agree with you. So the average 10 year old car will end up being scraped because something fitted to it fails and costs too much to fix, now this complete car is going to have to be recycled which is counter productive and will generate pollution getting rid of it and then another car will be built to replace it causing even more damage to the environment. It is far better to keep a good car going until it is truly beyond its usefulness.
Exactly!
Its only bad for the environment when companies cannot make money from it or when government cannot make tax from it
I have a Peugeot 3008 Diesel Hybrid (2014) and it performs a Re-Gen automatically and tells me that it is doing it.
I agree with the DPF removal from the 10th year onwards. I bought an used E81, 14 years old. Soon the DPF light went on, but as a new car owner, I talked to a friend and by his advice tried to fix it by regen, long drive at 2000rpm. My fault. The result was the turbine broke it's axis after a highway drive. Everything's ok now, but the high pressure from a blocked DPF is not something to be neglected, no matter the extent of blockage.
I checked the back pressure before the dpf using ista, maybe try that to see if its blocked. It revs up the engine by itself apart from the last check, great to watch.
Just did a long 1000km autobahn trip in my 2015 316d touring, after 2 years of mostly short-ish trips because of the pandemic. Car feels a lot better than it did before, consumption went way down.
Best thing I ever did .. cut along welds clean out ceramic muck ..re weld then remapped
Job done ✔️
Did pass mot
In some countries, a dpf delete will render your vehicle unroadworthy, therefore also not insurable. The legal issues could easily escalate. Replacing a dpf is cheaper.
Its a temperature sensor problem mate which is situated on the exhaust close to the motor.
Now to clean your DPF just use DASTY Degreaser, let it sit overnight and it is brand new.I have use this on my dpf of my car and it worked amazingly.Dont need to spend 150£ to let your dpf flush and cleaned.
My brakes are squealing. I know I'll remove them. Sorted!
Similar problem with my 2016 Cx5, tried regen no luck. Actually the warning light came on when I was over 300km from home. I drove back at 120kph in outside temperatures of 35°c. Sweet FA!
Eventually took it to Mazda Dealership, took them a few hours for a computer "burn off" 6 months on now, no problems fingers crossed!!
If it does return I ll either remove it or do a chemical clean. Thankfully they're not mandatory here!! Cheers for the video George.
Great video, very helpful. Waiting for the resolution !
I've had my 2006 E91 330d for 6 years and never had any major problems or error messages. Only issue I've had is the old quacking EGR valve issue. Replaced with another used part from ebay for £20 and another 2 years in without issue. When taking out the old EGR it wasn't overly mucky either.
Don't know if this is testament to the 6 pot diesel, good servicing or just luck. Do mainly town driving, but do have a 1 or 2 30min drives at 60mph every month. Either way looks like I'm one of the lucky ones 😅
As others have mentioned you should not keep the revs high... Measure the exhaust gas temp before DPF and you'll see it start steadily climbing once above 50mph, when hot enough should start burning the soot mass.... You should also check to see if coolant temp drops below 60c when driving over 50 over a long period of time. If so it is your thermostats.. i would measure these parameters with ista whilst driving by recording the screen or something... see if the soot mass & ash goes down at all (passive regen)..
Hi George. I can see your problem on the ISTA while you are driving very clearly. Your back pressure reading is way too high. The ecu won’t start a regeneration unless the back pressure according the ISTA SHOULD BE WITHIN THESE RANGES: less than 35 mbar at idle, less than 75 mbar at 2000 RPM and less than 200 mbar at cut off engine RPM which is about 4000 RPM. The ISTA will do that test for you. It will rev the engine automatically during the test and the end will tell you the 3 readings and the maximum permissible values as I mentioned above. It is a safety feature because a regen with a heavily blocked dpf might set a fire. Of course you know your both egr and main engines thermostat should be working fine, the diesel in the tank as you mentioned shouldn’t be low, of course your glow plugs and the control unit should be working, good working egr and no fault code stored in the ecu. Another reason for such high back pressure reading is a a faulty back pressure sensor which is about £30. I had the same problem. I had an on car dpf cleaning twice. It doesn’t work. What I did I took the dpf to a place near Blackpool, I live in northwest, they pump flush cleaned the dpf in about an hour for £150 just then BINGO, the pressure readings came down hugely just like what you get from a brand new dpf. Of course there is a very important thing which most of people don’t know. In the ecu software if the mileage of the car is 150 000 miles then even if the dpf is not blocked and other parameters are normal, still the dpf won’t regenerate until you go through a dpf replacement procedure in the ISTA, even if you physically installed a brand new OME DPF. By the way my car is 520d, M47 engine, 57 registration plate. Hope that will help you. Again please don’t spend any money on ON CAR DPF cleaning, specially you can take out the dpf out of the car your self. Good luck
Hello, are you suggesting to reset the Dpf counter?
@@kirwanjohn101 if the DPF cleaned professionally and the back pressure is reading really low, something like less than 10 mbar at idle, then sure you need to reset the DPF which I think it will give you another 250000 km.
This happened to my sister's 1 series, told it the dpf had been changed and it fixed it
It will regenerate, you just need to keep clearing the errors. While on the motorway it slowly regens passively and it increases exhaust temperature regardless of the backpressure. Mine used to get to about 400-450C for about 10 minutes before chucking an error and failing. You need to clear the error while driving and carry on until eventually it will passively unblock itself enough to blast the temps to 600-650C. Once it hits that it usually clears the soot all the way through.
You can only regen with the engine management system... my brother in law sorted mine after I had done what you did... plugged in the engine code thingy, looked for it, did what was needed then it was perfect again...
Learnt a lot from this one Bud thank you
Hi George, 4:32, it says “as soon as the fault no longer occurs, the DDE will perform a normal regeneration” the car may not be able to regenerate because of the fault code. the exhaust pressure might be too high to regen?
Absolutely agree with the dpf. I bought a Mk8 transit it had huge issues with the dpf till I deleted it along with the egr.
Did you pass an mot? I just had my egr and dpf mapped and the guy suggested removing the dpf but won’t this fail on emissions?
The trouble is if past owner have not looked after dpf then no amount of regen will work its either a clean hoping the surface are notvdamage or a new one
Under the new mot the have to visually check for different and next year there will be a computer check if it missing then your car fails mot.
I played a drinking game, every time George says regeneration I took a shot.
I currently have liver failure.
😂😂😂
My 5 series 2.0d is ten years old, done 120,000 miles and I have never had a problem with dpf. I was told that constant around town driving is the main cause of issues.
Correct!!!
I have a bmw e65 730d with 169,000 miles and my dpf its totally fine. Bmw dpfs are usually bomb proof, never had any bother, mine regens when your driving in town even. In the family we have 320d a 335d, 730d, x3 2.0d, 520d, x1 2.0d and a x5 3.0d. I have friends with diesel bmws and no problems.
I had same problem. The other condition required is engine coolant temp above 75°. I checked the thermostat in a saucepan and thermometer and it was opening at 68° changed for a new one and bingo, finally regenerated.
I had the same issues.. until I started using premium diesel and keeping the tank over half full. You will get a shock at MOT time when they see you removed the DPF... Its an automatic fail and there is a large fine for the driver... Replace the DPF pressure sensor I guarantee thats why you are unable to get the regen done...
Premium fuel - - agree. I have had issues in the past using supermarket fuel.
I have 280,000 km on the original dpf. Its good to take it on long trips. I also use cetane booster in the fuel.
Never had any issues with regens. I was told if you use the wrong oil it can cause issues with regen process
Had the dpf removed from my vw van and it feels like it’s been racing tuned, I’m all for the dpf purge
I had the exact same problem so I replaced the DPF filter and still had the same problem. In the end after around £2000 I replaced the exhaust sensor on the manifold and reset , worked fine but cost me a lot of money !!
Took my 3.5 year old Vauxhall Astra 2.0 Cd SRi into lookers (main dealer) in Oct 2015 with low oil pressure warning after the engine would crank as too much oil in system. Turned out the extra diesel that is pumped in to burn the exhaust gases is designed to be dumped into oil sump! - that was the last I saw of the car, Lookers tried regen and couldn’t after trying several things they told me the next thing to “try” was new injectors @ £2000 but could not guarantee that would work - told them I wanted Vauxhall involved but vauxhall point blank refused to do so - would never buy another Vauxhall on that basis again
You need someone sitting next to you deleting both of the dpf codes, that was the only way I managed to get mine to regen, but yes the DPF are the cause of a lot of trouble
Yes I have a video coming on this👌🏼
Volvo v50 245000 miles no dpf issues though the front struts needs replacing worn out now and 1 top bearing cranking noise when I turn full lock towards the right .
My Mazda 3 has over 160K and no problems. During a dpf clean the exhaust is much hotter to the hand. Removing a dpf is illegal and your car will fail the MOT. The same for EGR tampering.
Removing that would be a guaranteed MOT fail.
Not if you know a guy that knows a guy 😏
I had the DPF light on mine and on inspection it was just the o2 sensor. Changed that and has been fine since.
I believe the n47 dpf service light comes on at 150k saying to change it ,I reset mine using diagnostics ,and cleaned it with using sol x cleaner.i have not had any problems since.The Nct test (national car test in Ireland) similar to mot in uk,are now starting to check cars soon to see if the dpf has been removed by using diagnostics and this will be a fail if no live data is seen for dpf.
You cant remove the dpf it an mot fail now if it is missing,,you need to getca garage rhat knows what they are doing removing dpf and reinstalling the dpf casing and remap the car,,,but you just cant do away with it physically altogether.,,also removing dpf often make car smoke a little and that may be a mot issue depending where you take it for mot.
I had the same problem, in the end it was down to the Sensors and that was with a new DPF
Hi George superb video... feel your pain with the dpf system playing up only car I've had with any dpf problem was my 07 c max many years ago... Was never the same and just got rid of it. Want a F10 520d m sport in the near future... I love them! Everyone dreams of super cars! All I want is a F10 520d msport that's my dream car 👍
When the car reaches approx 250k km approx 150k miles the dpf fault code will come up even if the dpf is still good because from factory the max usage of the dpf is 250k km. What you need to do is reset the dpf by telling the system that you have changed the dpf without really changing it. There are a couple of videos on UA-cam about this issue and on how to program this.
I have never had an issue with the DPF on any car which I have had, and I don't do huge miles. Removing it makes your car illegal and uninsurable, so if it is working fine then leave it in place. Most failures seem to stem from other issues anyway which cause it not to regen properly. Failed thermostats being a common one.
EGR is a major headache too!!!
@@paulmcdonald8055 They can be, I haven't had major issues on any of my diesel cars but the one on my N57 is mapped out. (but still in place if anyone tries to look at it)
If you understand how the car works they can be managed quite well. My new petrol car has a ppf
Totally agree, nanocarbon molecules are filtered for a reason as they cause cancer.
Thermostat.
Glow plugs.
Glow plug module.
Driving around on an empty tank all the time.
Short journeys.
Crapy diesel.
Crapy fuel filter.
Crapy engine oil.
The list is absolutely endless.
My Alfa 159 tells me when it needs a dpf regeneration on the dashboard - mine is the later 2.0 jtdm. Alfa placed the dpf nearer to the exhaust manifold in the 2.0 models, which makes the regen far more efficient.
I had DPF problems on my Mitsubishi Outlander 2007, as the the car did not have a dedicated dpf icon but used the engine management light, this light commonly came on when the Dpf needed to be regenerated. However as the car had done over 100.000 miles it was a pain with engine fans keep come on and the car becoming quite hesitant at times when driven.
I was advised due to the amount of miles on the clock the dpf woukd require replacing ....£££££
Had exactly the same codes with my e91 320d. Removed the DPF twice and cleaned thru after failing to start a regen. In the end I gutted it, refitted and blanked off the EGR and had a simple plug a pray map to remove them. Absolutely no faults since, car went from around 50mpg to 60+mpg (872 miles to the tank the best). Also no smoke other than the small amount you would expect from any diesel under load
And your car is polluting like hell. Nitrous oxides are invisible, but toxic, carcinogenic. If you do not have money for spare parts use a petrol car.
Gotta love a dirty diesel 😀
Dpfs on this generation of BMW’s are sensitive to the following components functioning properly:
- glow plugs & module
- main & egr thermostats
- throttle control actuator connected egr
Not sure if you’ve already trouble-shooted those areas?
Yep all working fine. It’s sorted now so will have an update video coming soon👍🏻
@@GeorgeAusters Nice one George, enjoying all your videos bud! We love our BMWs
I have a glow plug module fault on my 330 M57 and it still regenerates. It wouldn’t though until I changed stuck open thermostat
Completely agree with your summary at the end mate.
Our vaux ttop dpf blocked up. vaux head office blamed us for driving vehicle like a taxi driver, driving instructor, too many stop start journeys. Never told this when purchased to drive like loony. 3 month battle with vaux via smmt. Car impounded. Won case ,no more vaux for me. Roof issues and egr issues galore.
Hi George great vid. I have a audi a3 2015 keep having the glow light flashing and goes into limp mode especially when the engines cold revs at 1000 rpm all the time switch engine off and back on again light stops flashing and it goes out of limp mode no dpf light though and no fault codes on diagnostics I'm just wondering if I have the same problem?
Clean thé back pressure hose and pipe kat ,check thé sensor connection and wires then First clean thé dpf then reset thé dpf. and boom another 150k km
From what I know, the regen starts when driving at over 60 kph, but the engine should not be revved over 2500rpm. It should work somewhere between 2000 and 2500 rpm. I have an E90 320d as well, and had no issues with my dpf until now. Hope that helps 👍
I just spent 1000 euro for a used but in excellent condition DPF... So no, I'm not removing it!!! 🙈
In Germany is illegal, if they caught you with dpf delete then you have big problems.
Yep German Tuv inspection is tough!
It’s also illegal to remove in uk will fail an mot if removed or visibly tampered with.
@@GeorgeAusters I bought a new dpf from Bosal and I was thinking to put in on only when I go to TÜV but if police stops me in traffic without dpf then It's bad, it is like my car is euro 0 and I prefer to make every 1-2 year a dpf and egr cleaning rather than risking to be caught, it's cheaper..
Volvo D5 engines will never run right without a dpf. Every Volvo tech I spoke to said don’t remove it.
Where does it say to drive in a lower gear at high revs to initiate a regen? I was told to drive at motorway speed for 20 mins to initiate.
My van showed a dpf fault but cleared after long motorway runs and is fine at 134k miles.
It is illegal to drive your diesel vehicle without the dpf if one should be fitted in the UK . I put a dpf cleaner through the dpf to clean it and it passes MOT every time. You have to drive it afterwards but be warned to do it on a private road because it smokes for a while. It looks as if the mist came up from the ocean behind you but after that the dpf is clean and emissions are within limits.
Do you have your own private road?
Its a good idea to clear the fault codes and test again if you dont clear your computer just repeats the codes !
ive got a 2.0ltr citroen C5 the ECU remembers old faults no matter what. so it may be that your old faults are still showing up after a regen? try deleting the old faults and running the car again and doing another diagnostic to see if they return.
I had a 520d e60 m47 engine with the same dpf problem and same fault codes, I cleared the codes then requested a regeneration and then changed from ista to inpa started the car and drove it while someone kept pressing the erase fault codes button on the laptop as inpa erased the codes continuously and quicker than ista, this worked for me
What I find most interesting about this is that you do not know what a rural road is.
Just a note of support. To tackle such issues in real time is impressive. I agree with you on DPF. I have 13 year old 520D with 72k which has had a very easy life. It is only used on journeys over over 100 miles no short journeys. The car is immaculate but will I get another 7 yrs out of it. Its electric and high tech issues which will condemn it to the scrap heap which in a holistic view is not good. I will only buy Toyota from now on
Your a poes
Another great video bro!
Cheers mate
If you remove or gut your dpf do not have a crash. The insurance company will be very keen to check the filter and if missing or tampered with your insurance goes out the window. You may also have to throw quite a bit of money at a bent MOT inspector for him/her to turn a blind eye to what you have done. Otherwise you will get a fine and no MOT.
i had a problem with mine, car wouldnt pull you out of bed, took it out profiessionaly cleaned and still running but you're right about them
I just ran mine through with a hose and detergent works perfectly now
It is a catch 22 as you can't remove a DPF as it is an instant MOT failure. If you have someone in the know, great but it still seriously impacts resale if you remove the system. It is worth noting that in most modern diesels the DPF won't regenerate if other error codes are present so make sure you have deleted all codes via a scanning tool before trying a regen. I have had a fair few issues with the DPF on my Jag XF. There are DPF cleaning services now at most garages, even Halfords do it, so it doesn't have to be too expensive. Also worth noting for the more environmentally and health minded people out there that if you delete the DPF there will be much more of the black stuff with pm10s being emitted.
Just get a Euro3 diesel mate and you can forget about crappy DPF's! Euro4 onwards with DPF's and swirl flaps etc are a frikkin pain.
Removal of the DPF is illegal as it comes under emissions control systems. Without a DPF and without EGR valves a large volume of NoX gases are emitted which are the gases that contribute to lung diseases and respiratory illnesses. DPFs are a serviceable item and convert soot that is collected by the particulate filter by into ash by high temperature burning. The ash is retained in the filter and eventually reaches a "full" level which no regeneration will reduce. Then it is time to clean or replace the filter. I have done this on my TDI Passat at 150k as it was used for a daily 35 mile commute so passive regeneration occurred due to constant high DPF temperature. Have never had a DPF light or fault code and replaced when regenerations became very frequent. Shorter journeys would have invoked active regenerations which the ECU controls by increasing fuelling and the ash content accumulates more quickly. There is no issue with having DPFs if you understand what they are, how they work and that they will need to be cleaned or replaced every 100 to 150k on average. My Passat is at 230k now - still no DPF issues.
@@MiracleMitch Not illegal, just an mot fail.
@@spudhead1161 You will find that in the UK removal of any emissions controlling parts on a motor vehicle is not illegal, but by law, DRIVING a vehicle whereby factory fitted emissions parts have been removed IS illegal. So basically you can remove a DPF and thereafter, if it does not fail the next MOT test, and you can get the car to the test station without driving it, you can look at your DPF removed car for ever more but just can't DRIVE it LEGALLY! 😂😂 Same thing then really isn't it? Shame it is so badly policed as I'm sure it would prevent small children from getting lung disorders from nearby diesel traffic fumes, particularly NoX gases.
How do I know this apart from having researched this to death? Brother's partner is a lawyer, sister is a police officer, brother is a police officer, father is a mechanic. Want the piece of legislation - I can get this for you too!? Or you can just Google it for yourself 🤔
@@MiracleMitch Certainly not the same thing is it? I don't care you have police in the family, is that supposed to make you right? haha. Do police check if cars have DPFs? certainly not.
It’s an mot failure if removed from a car that was fitted as new.
It is only there to make governments feel better
I don't know about that because they said downtown London air smells like diesel.
I totally agree but in California it’s a $10,000 fine plus you lose your warranty trust me I would rip that thing off my truck if I can get away with it , I’m still looking to find ways around it there is stuff called maxx mileage which helps the DPF from plugging up however don’t want to lose warranty and don’t want a fine
DPF Doctor !!!
I have had my 7 year old C4 115 bhp diesel for six years now and it has passed every MOT (4) with no advisories and I only do local urban driving. I have only replaced discs and pads on it so I hope I have it for another six.
The problem started when car manufacturers stated in the late 90's the new commonrail diesel injection engine's would never need the glow plugs replaced.
That's why dpf/egr exists today but just to replace glow plugs every 30k was all that was required.
I have a 2008 diesel. New enough for common rail old enough to not have a DPF. It goes like stink and if you rev it you almost always get black smoke. Its always serviced and runs perfectly.
Was chap I used to see around telling fibs when he said removing the filter caused his car to fail the MOT. He said when the MOT station logged his car on to the system it told them the car came fitted with a filter. It’s removal they claimed meant an automatic failure.
Normally you have to clear codes before it will allow a regen.
Had same issue once on my C30 but cleared codes and it allowed the regen then.
I also ended up removing it a month later and washed it out snd fitted a hybrid turbo not had one issue since.
Had similar on my e60 530d, turned out to be an injector issue which failed attempts to regen
Had same problem on a Ford transit connect a few years ago, it just would not regen and it would also fail a forced regen which could be done while the van was stationary using a laptop and software, I had a new DPF fitted at cost of £1300 by a company called Click Machanic (cowboy mobile machanics), and within a month same problem returned block DPF and again would not regen, so I to it to a local garage it turned out to be a faulty glow plug and clogged pipe within the exhaust system prior to the DPF which is for igniting the fuel that is injected into the exhaust system with the goal of heating the DPF to a temperature of around 600⁰C which in turn burns the particulates of and turns it to Ash which is then released out of the exhaust, When the DPF does a regen you will know that it has done so when you park up and get out of the car as you will hear the exhaust making a clicking sound, this is the exhaust cooling down you will all so notice a distinct smell and you will feel heat being emitted from underneath the car. Another thing to remember is when you do an oil change You need to use Low SAPS oil because Sulphated Ash, Phosphorous, and Sulphur are all substances that can build-up and block your vehicle's DPF.
Hope this helps don't give up and if you get it sorted just remember to give the car a blast down the motorway every 3-4 weeks.
active regen system. normally blows a fuse in the fusebox when this is the issue. the part to repair, for the complete unit (injector and glow plug) is around £150 and takes about 20 mins to fit, working on a jack/axle stands.
I was told bmw Carley is good at forcing a regeneration.
Hi pal I’ve got a 2010 Audi A3 2.0tdi. I get this dpf issue your getting but a motorway spin at 2.5k rpms & 20-30 mins tend to clear it
Ford focus 2011
1.6 diesel
390 k mileage
Never problems
dpf in bmw seems fine. See what is happening in cars from the vag group.
In my skoda skuperb 2016 dpf regenerates every 250km while driving around the city and about 550km on the highway.
I put petrol in my pssat cc 2.0 tdi by mistake , it was only half tank, I added diesel to the full I drove 10 minutes with 50/50, pumped out the mixture when I got home.After 2 weeks I went for an MOT, pollution levels perfect as new.
That can destroy your HPFP and injectors
@@GeorgeAusters I did it by mistake, I have a petrol car as well and it was first day out after 10 days self isolating for Covid. I am aware that injectors seals can get damaged but my mechanic said these vw models are very well made and it may go like this for another 50000km
The DPF got fire from the petrol injected and not ignited when I tried to start on petrol only. The smell was awful and the exhaust got stuck for few seconds before everything came back to normal.
I thought it was illegal to remove the DPF.
The problems with Dpfs regenerations can be caused by multiple situations, one of the most important is the turbo system not working properly. I had problems with my diesel car, during several years, just because there was a very small hole in the solenoid vacuum hose of the turbo, that no mechanic noticed and that no error code diagnostic! I discovered the problem by myself.
If you get DPF regeneration issues you're using the wrong kind of vehicle for your use. Diesels are for long distance cruising, if you do a lot of short trips a petrol or electric vehicle is better suited.
you are of course assuming that a petrol version is available OR that an electric car is suitable for someones needs and is actually AFFORDABLE to them also?
Mine turned out to be low on PAT fluid, topped up, all good now
Also it could be an underlying issue other than dpf filter it could be a leak from your turbo intercooler hose pipe (split pipe) or it could be a dirty maf sensor.
I made an update video how I fixed the issue
My BMW E91 320d LCI has 186k miles on it and it has the original DPF. The exhaust backpressure sensor should be changed every 60-70k miles (it`s a piezzo part and exhaust temperature along with soot will make it give wrong info to ecu). Also you should check your entire engine (worn injectors/turbo/piston rings will cause building up more soot in your dpf). Removing your dpf should be the last option and I would not recomend removing it unless your engine is pretty much worn out
Hello bro great video, can removing dpf cause problems with the engine
The question you should be asking is why it's got blocked to start with.
My son has a vw passat 2009 tdi 2.0 he has had all sorts replaced it regens all tge time some how its putting diesil in his sump so he is changing engine oil every week he has spent a fortune 3 garages still does the same thing
George, can you issue the follow up video please? We are all dying to know how you fixed it. Thanks
Yes I have a video coming next week👍🏻
i agree the dpf is pants had so much trouble in the past
Love my diesel car but will never have another one because of the bloody DPF, I Made sure mine didn't have one when I bought it, now 11 years old and will keep it going as long as I can before going back to petrol.
You need high load not high revs so that the turbo is working hard and the exhaust gas temp and flow are high.
In most countries you will fail MOT , TuV, APK etc. so driving is not allowed anymore ; insurance coverage is expired under failing MOT and fines and seizures are looming.
Not the best advice , I am afraid
Are you checking the exhaust gas temperature at the turbine outlet and also at the dpf inlet when driving using your computer gadgets.
The turbine out temp should get hot enough based on your hard motorway driving pattern. Say about 400degC.
Then under these conditions the dpf inlet temperature should be much higher maybe 500-600 deg C.
If the dpf in temperature is not higher then it will not regenerate
I totally agree with U , but is it possible to remove the shit , or/and bypass it ? Another thing , is it than possible to put it back just for the ITV , and out right after ? 🤔😅
Hi George I suspect it wont re-gen because the dpf is blocked at the back with ash. Dpf's do have a limited lifespan & will only re-gen so many times before they need replacing because when it re-gens whilst it burns the soot out this process produces ash which can't be removed/burnt out of the dpf, & the ash builds up at the back of the dpf causing the differential pressures from the front to the back of the dpf become too large (implausible) giving you the trouble codes I think you've got. I had a problem with a ford galaxy that wouldn't re-gen. It had similar trouble codes & would go through the motions but would not re-gen. It turned out that the differential pressures form the front of the dpf to the rear of the dpf were too great which think is what your diagnostics are suggesting. There are companies that clean dpf's & they always clean them back to front to force the ash out of the front of the dpf. In my case the dpf was too far gone & had to be replaced because the diesel catalytic converter had broken up & also blocked the dpf. once I replaced the catalytic converter & dpf the car did a re-gen straight away without me having to request one because it was happy with the differential pressures. I also found out that some dpf's re-gen much more frequently than most people think as watching it on live data after I had done the repair it regenerated several times on a 60 minute journey & that was with all new parts. I hope this help you.
BMW cars have backpressure sensor not differential pressure sensor. It uses only one hose plugged from the DPF
@Antonio Carsa what I meant was there are two pressure sensors one at the front & one at the back of the dpf & the ecu measures the difference between the two sensors, hence differential pressure
@@simonkeable391 BMW does not have a pressure sensor after DPF. There are two sensors. One mounted before the turbocharger in the exhaust manifold and one before the DPF/OxyCat. The backpressure measurement is based on the difference between the pressure read with engine off and with engine running.
Diesels are good for motorway driving and long distance trips not for around town and popping to the shops, if it comes up with a fault it’s there for good get a petrol for short drives
Had a 2009 A4 B8 2L TDI - would regen nearly every day. Then had the diesel emissions recall, made it worse, had it rolled back to the lesser evil!
Thinking of doing mine this ceramic wherever is not helpful but make cars choke for no purpose delete remap done and dusted
Why do ALL diesel owners need to remove their DPF's? You have not made a case for such. My 6 yr old Mazda 2 skyactivD regenerates quite happily on its own. Had one problem with a sensor, but Mazda fixed it for free outside of warranty. Fine ever since.
I don't think he meant it literal, I think it was more of the UA-cam game , of having a striking title that lures viewers in.
I believed it is probably too blocked the system will not allow it to regen you need too remove and clean or fit new dpf