It's at 800,000k now and the DPD filter had soot on the exit side so needed to be replaced. But I am stumped, my local Isuzu "lead tech" is stumped. Our solution provides clients with the improved reliability they seek along with the welcome addition of increased power, smoother driveability and better fuel economy. 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. The next Isuzu specialists ran a heap of tests and said the injectors tested fine (they were replaced some time back by this service centre) but perhaps the turbocharger was a problem and it was producing a lot of soot which made for irregular burns. The big problem is no one gets them cleaned.Isuzu servicing gets them sonic cleaned every 100,000kms but hardly anyone does them. 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.

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We have an Isuzu FVD 1000. If your still around is this truck a Giga model? Isuzu truck DPD regen problems - can anyone help? Can you do a log file of the truck while its happening and post it please? 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. When you are looking at 30 grandfor a basic diesel 4wd engine, it's not unreasonable toexpect long life. Is there A way to lock the knob in place so it doesn't get knocked out of spec? We try and do regular manual burns but now it wont let us do this any more. I think this will solve my code issue since turbo is spooling at a high rate at the 1800 rpm idle.

2011 Isuzu NPR-HD 5.2L (6 4HK1) High Idle. Three different Isuzu … This is even more unhelpful and this thread (among others) is why I bought a Hino. Showed up. This is completely unhelpful but we had the same problem on the same model truck and couldn't get on top of it,ended up auctioning it. JavaScript is disabled.

This truck came in with a p244b - dpf high differential pressure, p2463 - dpf high soot accumulation, p2459 - dpf regen frequency. Codes causing to default after 2 block of driving. It could be a wiring problem...like a damaged loom. Isuzu npr regen problems Isuzu npr regen problems. Installed OE turbocharger and replaced map sensor (I broke the original taking it out to clean) No vacuum leaks detected. I’m sitting in my truck as I write this sort of freaking out.. he was't happy but paid the bill. You'll have to park for about 15 minutes to accomplish this. Isuzu 2011 NQR 450 290 000 Km. Put it into park and started it up. Not talking about passenger vehicles more so trucks here. Oh, extra info – in the last five days it has started asking for a manual burn on top of the many irregular burns. Thanks for the two sensible replies. I felt it could be a problem in the system controlling the burns because of the 'jumping of the bars', but none of the service centres have said there is a way to reset or reboot the system – and I'm an English teacher, not a mechanic, so what would I know. I was called for a bus that wouldn't start last summer. If the turbo oil seals are leaking, burnt oil smoke will fill the DPF quickly.

The variableintake system was jammed partially open and the vehicle was still goingreasonably well, but just had a permanent MIL on. is everyone that's having problems getting the repairs done by an Isuzu dealer or just a mechanic that thinks they know what they are doing? A commercial quality scan tool in the hands of a capable technician will be the most powerful diagnostic tool here, along with the specific service information. i cant see emails because im only new here. ExpeditersOnline.com is the Internet's leading information and resource provider for the expedited transportation industry. 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. With the new filter, it began irregular burns. I could kick myself. Yes, I'd say you are quite correct here. Opus Intelligent Vehicle Support (IVS) combines Autologic, Drew Technologies, Bluelink and Farsight on a mission to help independent shops and technicians repair complex vehicle technology. As you note, replacement DPF's don't always behave like the first oneand this is quite possibly because of the extra junk it's expected to swallowonce the engine ages. You are using an out of date browser. Its time this Company was held to account. My feeling is that this extreme irregular regen rate indicates a computer problem but we have one service centre that wants us to put in new injectors and turbocharger (even though the injectors tested OK), one who thinks it's a loose wire somewhere (but not sure how that fits the symptoms) and one who has never heard of it before and has no idea and says just keep driving and see what happens.

Isuzu NPR 5. The agents have relieved me of $1,300 (approx) for supposedly sorting the problem without success & cannot give me a definite solution. When I switch manual off prior to driving, it reminds me to push dpp switch. Can anyone look at this problem and offer suggestions?

actually it'll be a complex mix of lubricant additives, wear metals and other non-combustible material. Would really like to know if they solved it, I am experiencing same problem :/ I used to get 260km burns then 1 day smoke started pouring out I fixed everything bellow smoke stopped but now regen coming at lower then before 140km 180km 200km 160km etc and very sluggish on regen, Except I just replacedNew injectorsNew egr New egr coolerNew oil coolerDpf filter ultrasonic cleaned back to NewNew suction control valveNew differential pressure sensor, Not looking good as they're talking off-road only which likely means DPF delete-, "Neerabup Diesel Services assist our clients with repairs to their DPD systems and also offer a permanent solution for offroad vehicles such as those utilised in mining and exploration applications. 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. Just an update, Turns out someone put diesel in the def tank, needed full cleaning and new catalytic converter. Are you using the correct low ash engine oil?Also there should be two sensors to measure the pressure drop across the dpf. PM him your situation (cut and paste) your OP and you should get a quicker response. Found turbocharger bypassing oil and wastegate frozen. This solution is available for the entire Isuzu truck range, for bookings contact us today. One thing that can be missed is the earth point for the ECU .

It had been burning at the 300km mark for every burn (the maximum it will go before burning, indicating it may not have been functioning properly and was just defaulting to the maximum kilometre burn rather than burning when necessary). Too true but apparently the OP's truck is saving the planet according to the brains trust that know all about these matters.You are not alone OP and help is at hand it seems-http://www.neerabupdiesel.com.au/news/isuzu-dpd-dpf-problemshttp://www.goldfieldsmc.com.au/Files/Other/Isuzu%20DPD%20Repair.pdfalthough I suspect it's strictly for off road use, on the farm, etc you understand ;)https://chiptuning.com.au/we-cracked-the-code-on-isuzu-npr-nps-f-series-for-dpf-off/. 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. Any suggestions? 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. In fact, with over 80,000 visitors per month, our site is by far the most popular expedited freight destination on the Internet!

I will from the rather old info on this page research & try & get a solution to the problem. I have a 2012 Isuzu NPR-HD with approx 90k miles and am having issues with DPF regen and Catalytic Converter.

If there are any new similar experiences out there who have managed to fix the DPF problems on similar vehicles without mortgaging the family home or taking the truck to the dump, I would like to hear from them. Isuzu truck DPD regen problems - can anyone help? I perform a forced selective regen. yet we still continue to have problems. One of the problems with DPF is that when the engineis new, the DPF is filtering pretty much only soot fromthe engine, which can then be purged through theregen process. Hey Jon we have a resident mechanic by the name greasytshirt. If you are interested to join me please email me at marcia@qldcg.com.au. This is really good to know, I only work on these minimally but will remember this one. 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. 110. please provide f. You've probably been forced to pull your truck over for a manual regeneration and possibly even experienced a severe derate rendering your truck useless and forcing a trip to the dealer. 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. is everyone that's having problems getting the repairs done by an Isuzu dealer, I’d be going to the Isuzu dealer in the first instance.

Has anyone had their DPF successfully cleaned through a workshop other than the dealership? I pulled over and thought may as well do it manually as I’ll be stationed for an hour or so.. Regen bars are still full and nothing has been done. Here we go again, $$$$$ It relates to irregular regeneration burns in the DPD filter – sorry to be so wordy, but I type fast and you may need all the pieces to the puzzle if you want to try and solve it. The new filter was put in by an Isuzu service centre and they started a manual burn with the new filter BUT didn't finish the manual burn – just stopped it part way in (so we wondered if this could be a problem but others said no.).



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