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  • DPF post ECU update

    Hi guys,

    Just been travelling a bit pulling a caravan and also not. Notice the the following DPF behaviour,

    1. If you sit idle for too long the DPF stops the burning process until moving again.
    2. If travelling with a caravan a burn occurs about every 200km and lasts a whopping 60 to 70km.
    3. When a burn is occuring during the tow period the DPF will go all the way back to zero percentage full, whereas city driving with a little freeway usually gets down to about 6% full before finishing.
    4. Travelling at 110km/h causes the DPF to burn less efficiently due to what I can only say is a reduced DPF temp around the 500 deg mark. When driving at slower speeds the DPF gets up to the mid to high 600 deg. When towing it seems to do the best burn go figure.

    Hope this helps clarify some of the mysteries of the DPF burn cycle.
    2018 150 Series Crystal Pearl Prado VX 2.8l. 2 inch King springs and Bilstein shocks, Airtek TJM snorkel.

  • #2
    So what is your verdict

    Is it better pre or post ?

    Comment


    • #3
      Originally posted by Phs View Post
      So what is your verdict

      Is it better pre or post ?
      Not sure seems to use less fuel when performing a burn. I'll tell you in 30000km. Thats when the first one started blowing white smoke.
      2018 150 Series Crystal Pearl Prado VX 2.8l. 2 inch King springs and Bilstein shocks, Airtek TJM snorkel.

      Comment


      • #4
        cheers for that , i did notice most of what you had found as well. I'm not sure if slowing down to 100kmh decreases the DPF temp , I thought it was becuase it was doing a partial burn , therefore less fuel was being injected.

        Comment


        • #5
          Generally the harder you push the higher the temps will be, but who knows with this complex DPF system

          Ours is getting done today, not that I asked but the service guy did say they have re programmed to do burns less often due to some Prados having smoke issues

          Comment


          • #6
            I've written it on another post... but my white smoke happened twice prior to the ECU recall (8K and 23Km's) and once after the ECU Recall (recall at 27K, white at 32K). Toyota looked over it today - DPF failure and new one ordered under warranty from Japan (4 weeks to arrive). Their comment was that the damage was likely to have occurred pre-ECU update, but who's to know? I'd be hammering for a new DPF. At least now I will have a new DPF and Post-Recall update from the 35Km mark now...

            Comment


            • #7
              I'll have to wait and see

              Never seen smoke never had any DPF issues
              But I always use good fuel and good engine oil that could be a factor

              Comment


              • #8
                Originally posted by Phs View Post
                I'll have to wait and see

                Never seen smoke never had any DPF issues
                But I always use good fuel and good engine oil that could be a factor
                I have, since the 1000km service (when I dropped the oil and the filter) only used quality low ash/ low sulphur oil and the two fuels I use are either Caltex Vortex Premium Diesel or BP Ultimate Diesel. I baby this thing - so I don't think that's a factor. The only 'engine mod' I've done is fit a provent200 catch can, but that shouldn't affect the DPF operation at all.

                I'll know in another 30,000km or so. If there's no smoke (and I don't change my driving style or the fuel/ oil used - which I won't) then I'll know if it was just a straight DPF fault or not. Remind me in 9 months or so...

                Comment


                • #9
                  Originally posted by CamJam View Post
                  I've written it on another post... but my white smoke happened twice prior to the ECU recall (8K and 23Km's) and once after the ECU Recall (recall at 27K, white at 32K). Toyota looked over it today - DPF failure and new one ordered under warranty from Japan (4 weeks to arrive). Their comment was that the damage was likely to have occurred pre-ECU update, but who's to know? I'd be hammering for a new DPF. At least now I will have a new DPF and Post-Recall update from the 35Km mark now...
                  Yep white smoke means dead DPF. I think I may have been one of the first Prado's to get the DPF replaced.
                  2018 150 Series Crystal Pearl Prado VX 2.8l. 2 inch King springs and Bilstein shocks, Airtek TJM snorkel.

                  Comment


                  • #10
                    Originally posted by Phs View Post
                    I'll have to wait and see

                    Never seen smoke never had any DPF issues
                    But I always use good fuel and good engine oil that could be a factor
                    Don't think so. I've only filled mine with BP Ultimate. Driven it with various conditions city , country and towing. I had a scangauge to monitor temps on the DPF from day dot and just when the DPF was failing the temp would not go over 600 deg. Possibly due to the 5th injector being blocked with carbon buildup.

                    Anyone blowing white smoke should demand a new DPF and not just the ECU update.
                    2018 150 Series Crystal Pearl Prado VX 2.8l. 2 inch King springs and Bilstein shocks, Airtek TJM snorkel.

                    Comment


                    • #11
                      Cuda do you have a catch can?
                      Cheers
                      Micheal.

                      2008 GXL D4D Auto. GOING... GOING... GONE
                      2015 GXL 1GD Auto. And it begins again...

                      Comment


                      • #12
                        Originally posted by 120D4D View Post
                        Cuda do you have a catch can?
                        No catch can all standard setup no add ons.
                        2018 150 Series Crystal Pearl Prado VX 2.8l. 2 inch King springs and Bilstein shocks, Airtek TJM snorkel.

                        Comment


                        • #13
                          Originally posted by 120D4D View Post
                          Cuda do you have a catch can?
                          Genuine question - why would you ask? I'd have thought that it'd be irrelevant as it's on the other side of combustion... but am I thinking incorrectly here? The only thing I could think would be that the exhaust gasses would be drier (a little or a lot, who really knows) - and this'd be the only thing it could effect. Having said that, I would've thought that this would help the DPF so it didn't clog up...?

                          The first instance I had the smoke was pre-catch-can, BTW.

                          Comment


                          • #14
                            Just wondering if that was something you may have in common and perhaps related.

                            It may well be irrelevant and possibly driving style is more relevant as I recall hearing/reading about blowing out the cobwebs on these 1GD's being a good idea from time to time...

                            Mine and Cudas tow a bit and that gets the heat up to assist passive regeneration, perhaps babying it around time isnt a good thing?
                            Cheers
                            Micheal.

                            2008 GXL D4D Auto. GOING... GOING... GONE
                            2015 GXL 1GD Auto. And it begins again...

                            Comment


                            • #15
                              Originally posted by 120D4D View Post
                              Just wondering if that was something you may have in common and perhaps related.

                              It may well be irrelevant and possibly driving style is more relevant as I recall hearing/reading about blowing out the cobwebs on these 1GD's being a good idea from time to time...

                              Mine and Cudas tow a bit and that gets the heat up to assist passive regeneration, perhaps babying it around time isnt a good thing?
                              Ah right.

                              Yeah, in so far as babying it, I was referring to the maintenance and quality of fuels etc. I'm with you on finding common things to try and pin point it.

                              For what it's worth, I don't tow (well, a Box trailer only once every couple of months with a total weight of around 500kg, that's it). Driving wise - it does a good 1000-odd km trip around each fortnight +/- a week, with to/from work during the week (25km each way). Then there's two 6000 - 8000km trips per year (but it's only done that twice since we got it). It's just been to the snow on a 1500km round trip and didn't blow smoke at all (5 people up with full luggage, bikes on the back). Come to think of it - yes, when it's being used on distance driving it doesn't seem to do it.

                              One thing that was of note last time, was the fact that it did it about 600m from me starting from cold outside my house. My thinking is that the set interval (300km from what I hear?) burn kicked in, and the engine wasn't warm enough? Don't know enough about it really.

                              Either way - Toyota had a look and have ordered a new DPF as it failed their testing. So something wasn't right.

                              I notice tonight that Berrima Diesel have put on Facebook a post apparently showing that the Hilux 2.8L manual states that white smoke during a DPF burn is normal, and not to be taken as a sign that somethings wrong?

                              Comment

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