The scan tool will indicate the progressive soot loading of the filter and should display any fault codes and live data, then the info helps steer the tech to the faulty area. My question is, can you manually regen the DPF before it reaches the 70% mark? so it cost $3800 but it eliminated the problem might pay you to check out if it can be done to your truck im pretty sure it can especially if it is before 2016 -2017 . i cant see emails because im only new here. We now have to resort to getting the dealers to do a forced burn every time now (about twice a month) and also do regular servicing with low ash, semi synthetic oil to give it a chance. The soot on the other side of the filter can be caused be a build up of ash in the filer and while a regen is carried out can cause a hot spot in the filter and crack causing soot to leak past. To those having trouble, what Ive read it seems that the Isuzus are set up to do a regen when the DPF reaches 70% blocked, whereas the Hinos are set up to regen at only 30%, so that if you delay a regen in an Isuzu, the DPF becomes critically blocked and the truck goes into limp home mode.My question is, can you manually regen the DPF before it reaches the 70% mark? com'da! Part of the problem is filtering soot and ash, soot is relatively easier to remove through regeneration (burn it off) but the left over ash isn't, it's non-combustible. Three different Isuzu truck service centres have been unable to solve this problem so, before we spend $10,000+ on top of the $4,000 we've already spent in the last few weeks, because the specialists don't know why it's doing this but 'maybe this will help', I was hoping someone here might have some ideas. I've already spent 6500$ trying to fix the problem n still the engine light is on.Company(Isuzu) shouldn't be introducing this system if it's not reliable.Don't want to spend any more since no one knows what the actual solution is.Just wondering if I can disable it. I have an 2008 NPS 300 4X4 with just 124,000 odd Km's with DPF/DPD problems. PM him your situation (cut and paste) your OP and you should get a quicker response. Isuzu 2011 NQR 450 290 000 Km. It's at 800,000k now and the DPD filter had soot on the exit side so needed to be replaced. My Hino has a regen button that I can push to activate a burn if I interrupted the previous burn (did it once just to see what would happen), but the truck will automatically regen anyway once you get going again.Not uncommon to regen almost everyday, and even several times per day if doing longer distances and higher load work.Mind you, it takes all of 5 minutes (literally) to do a regen. Or it could be a combination of things or a performance issue. I just thought someone may have come across a similar problem before. With the new filter, it began irregular burns. EGR only works at low revs and cold starts but how would you like a tube out your ass back into your mouth? My Chev which takes adblu kept putting messages about the quality of the product up and I could notget rid of it so as Performax and Isuzu are linked back up to ballarat where they could not fix it (I paid 1.500) then they wanted another 1200 for two nox sensors at that point I bit the bullet as it was obvious that ISUZU did not know how to fix the problem and throwing expensive parts at it was no guarnatee it was fixed .In the end I got the car chipped o.k. Err, no thanks, though it sounds like a weight loss method that might actually work;D. I recently saw the absolute bomb crater of an inlet system on a turbodiesel Prado with 300,000k's on it. If so have you checked it to make sure it is not turned up? Isuzu truck DPD regen problems - can anyone help? Codes causing to default after 2 block of driving. Need help figuring it out. actually it'll be a complex mix of lubricant additives, wear metals and other non-combustible material.

Upstream and downstream sensors replaced as well as the filter cleaned. Need to see if they found the reason for it..dont want to spend thousands on guessesThanyou Debbie, Hi, can you see the original poster email....I would like to email them to see if they resolved probThankyou. If you are interested to join me please email me at marcia@qldcg.com.au. I will from the rather old info on this page research & try & get a solution to the problem. Installed OE turbocharger and replaced map sensor (I broke the original taking it out to clean) No vacuum leaks detected. Generally the Scr gets damaged with contaminated DEF. I have a 2012 npr200 which began the auto regen process as I was driving.. Thank you, the stealers, sorry Dealers don't seem to be any the wiser to how they are going to rectify this but are getting restless in their seats as they are paying for this under warranty. It may not display this or other websites correctly. The only thing that we have been told that could be causing it is a leaky EGR or the computer needs to be reconfigured, or reprogrammed. One of the problems with DPF is that when the engine. Any suggestions? NPR came in with 1800 rpm idle when in park or n. Goes to stock idle in gear. They are both new, less than 12 months old and after approximately 6.5k the smaller of the two started to have regen problems. Thanks that makes sense for the p2463, that was the day he drove it back when couldn’t get manual regen to work on the side of the road. Now I can finish testing. My feeling is that even an aging turbocharger isn't going to produce soot at a standard rate for 280km then produce soot at 400% higher rate for 30km to trigger a burn, then go back to a standard rate of soot production, then 300% more, and then normal and so on (and the short burns where the bars on the display jump from one bar to four or five happen in both city driving and open road 100km of 100kph driving). The variableintake system was jammed partially open and the vehicle was still goingreasonably well, but just had a permanent MIL on. I have this 2012 NPR, Im calling out more professionals for assistance, seeing as many of my die hards have left the mothership and came here. feel the turbocharger could be interfering. At 400,000k the DPD filter was replaced and it continued well. posted 2016-Jul-13, 7:10 am AEST O.P. Had codes for regen too often and over boosting. How long are you willing to wait for an outcome? There are a number of manufacturer initiated programsnow underway to vary the way DPF burns are conductedto extend the life of the DPF and reduce issues from the trapping of unwanted combustion products.

You'll have to park for about 15 minutes to accomplish this.

Hello, we are having the same prob...do you know the original posters email thanks? JavaScript is disabled. yet we still continue to have problems. Has anyone got OP email ? Meanwhile, my hubby is having a nervous breakdown because he's worried it will stop in the worst place, as is often the way when something goes wrong (the first DPD filter stopped the truck without warning near the 400,000k mark and it had to be towed), or that he'll spend the money on injectors and turbocharger and the problem will continue. Here we go again, $$$$$ All the computer diagnostics have been run twice at a major Isuzu service centre with no answers coming out of that. : Pkg Qty: 1 (English, Paper, 2909910301). I cannot find the source of high idle. I guess we'll know in a few days. The DPF was manually cleaned. from July 2016; to September 2019; last updated – posted 2019-Sep-17, 8:57 pm AEST posted 2019-Sep-17, 8:57 pm AEST User #396911 8 posts. So there are two different catalysts on here. They tell me VW were experimenting with that idea but alas... Trouble is all new diesels will have DPF filtering as part of the emmisions standards My mate bought a Landcruiser v8 about two years ago and wanted to buy a new one and was told it would have DPF from 2016 he's now bought a Dodge2500 but can remove the adblu if it becomes troublesome.Mine is a 2011 silverado and the adblu caused no end of trouble had the truck chipped no more problems. 2011 Isuzu NPR red exhaust light light, amber regen light blinking, engine derate light on, no codes, exhaust differential is at 0.02 psi. Isuzu NPR 5. This truck came in with a p244b - dpf high differential pressure, p2463 - dpf high soot accumulation, p2459 - dpf regen frequency. The bars in the display that should climb fairly regularly from none, one, two and so on as the soot filled the burner, would do as expected for one burn, going out to about 280km, then next burn would go to one bar, then jump to four and five bars and then burn. I can do the DPD delete on the 4HK, 6HK and 6UZ models, but not the Giga's. 280km, 50km, 200km, 40km, 80km, 280km, 30km, etc.

I asked the driver if it was in Park or neutral. Thanks.

actually it'll be a complex mix of lubricant additives, wear metals and other non-combustible material.

Isuzu truck DPD regen problems - can anyone help? Just a follow up to this, we are still having issues and are very stuck now. If the ECU has a bad earth or ground at one earth point it may not affect normal drive but may affect other electronic components such as dpd pressure sensor causing the voltage to be out and cause the sensor to read incorrect and give the ecu a bad reading. Thanks for the two sensible replies. Also get them to smoke test the intake between the turbo and the engine (the pressure side). They're checking the wiring out at the same time but feel the turbocharger could be interfering with everything else. This is possible. he was't happy but paid the bill. © 1999-2020 On Time Media, LLC. I … Nice but as you say not quite legal mine apparently is legal but all the equipment is still there as its too hard to take it all out apparently . Showed up. But lots of known issues that independent mechanics would of come across. This is even more unhelpful and this thread (among others) is why I bought a Hino. The mess hadn't been helped by home maintenance with cheap oil, but the mix of blow-by, EGR and extendedchange intervals had left the intake plenum with a sectional area of 4 square centimetres at the head interface instead of the normal 12. If the turbo oil seals are leaking, burnt oil smoke will fill the DPF quickly. Hey Jon we have a resident mechanic by the name greasytshirt. Hand over exhaust , not hot , not working. There are DPF cleaning services if you search around- https://www.dpfregen.com.au/diesel-truck-dpf-cleaning-sydney/and you have to do a bit of homework on maintaining your DPF-http://www.oilem.com/dpf-cleaners-and-dpf-cleaning/and no doubt cleaning machine technology is advancing with the size of the problem. If there is no traffic and moving ok, there is no issues. The issue of deterioration as the engine ages is still the underlying problem though I think.



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