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2.8L DPF Regen tracking

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  • #31
    Honestly the filter is that fine it will only regenerate when it needs to. If the dpf itself is not working
    1) lights will come on
    2) performance will suffer
    3) it will smoke and smell
    4) oil level will rise as unburnt diesel gets into sump - usually dpf have a min, max and a third mark on the dipstick
    5) fuel level for a regen usually 1/4 tank or more. If it is on the minimum it may attempt to regen but abort before it has finished - check owners manual (the toyota site does not have a manual for the 2.8
    Check your tailpipe it should be shiny clean no soot like us 120s.
    What is the fuel/oil consumption as that is the only thing that will clog it provided it is getting hot enough in the first place - and it is because a dpf that attempts to go full cycle at too lower temperature smokes and stinks like hell.
    Lastly oil spec is critical - low ash oil only as conventional oil topping up will knacker it

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    • #32
      That is about 2300 rpm in 6th at 115km/h Mick

      All good Scruffy,
      The reason I started this post was because I wanted to see if other owners of the new 2.8 were seeing the same regen pattern. This is my first diesel, and was just trying to gather some info as Toyota has nothing.

      Comment


      • #33
        Re 2300rpm at 115km/hr - next time try flicking on cruise control. I find mine doesn't jump into 6th readily, but as soon as I engage cruise control, or lift off the pedal, it does engage the seemingly elusive 6th gear. At 115km/hr I'm sitting on 1800 rpm (2.8l @ 2000km no region yet).

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        • #34
          Yep agreed re the elusive 6th gear. Flick cruise control on at 100 - bang there she is, but do 115 using your foot, 6th carnt always be assed working.

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          • #35
            Thanks for the replies all, mine is manual and I checked with a gps speedo as mine appears to be slightly out, and at 110 in 6th gear I am at 2300.
            If anyone else has a manual I would be interested in what they see too :-)

            Comment


            • #36
              Originally posted by BradO2K15 View Post
              Thanks for the replies all, mine is manual and I checked with a gps speedo as mine appears to be slightly out, and at 110 in 6th gear I am at 2300.
              If anyone else has a manual I would be interested in what they see too :-)
              Thats about the same revs as my 5 speed auto in top gear.
              [B]Steve[/B]

              2010 Silver GXL Prado 150, D4D Auto, with a few non standard bits

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              • #37
                Looking at the specs:

                6 speed manual
                1 4.171
                2 2.190
                3 1.488
                4 1.193
                5 1.000
                6 0.799
                Final 3.727

                6 speed auto
                1 3.600
                2 2.090
                3 1.488
                4 1.000
                5 0.687
                6 0.580
                Final 3.909

                I was surprised that the manuals 6th is not much of an overdrive. Even the auto's 5th is lower.

                I'm also well under 2,000rpm at highway speeds and find that 6th is probably a tad to tall for a 4 pot diesel!
                Cheers
                Micheal.

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

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                • #38
                  Originally posted by BradO2K15 View Post
                  Thanks for the replies all, mine is manual and I checked with a gps speedo as mine appears to be slightly out, and at 110 in 6th gear I am at 2300.
                  If anyone else has a manual I would be interested in what they see too :-)
                  Same for me with the manual also..

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                  • #39
                    Interesting thing is that in Europe the 2.8L does not have a particles filter; it has urea "ad-blue" injection in middle of the exhaust line to convert NOx particles... probably Toyota did not want to put it everywhere (it has some cost and force a 10.000-15.000km refill of the 15L tank)(approx).

                    Advantage: no regen...

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                    • #40
                      I recently went in for the 7th time with DPF issues and the Toyota DPF expert? turned my warning light on so when the car is doing a burn it flashes. I have just done a trip towing my caravan roughly 1000kms and I did 5 burns in that time, excessive I think but toyota seems it is ok. I used to get 8.7ltr/100km and now am struggling to get 11.3 ltrs/100km. According to Toyota this is normal, they truely have no idea and I am assuming the cars fuel consumption is due to the increase in burns it does.

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                      • #41
                        Yes I agree that 200 Km per regen seems high, under light load the interval is over 300. It made me laugh to read your comment that "Toyota truly have no idea" I am in full agreement with this sentiment as well despite all their BS. There is a very good ongoing thread about the DPF on the Fortuner forum, the latest is a contradicting reply from Toyota NZ to a customer (guest lol) they say that the 2019 engines do not have any problems yet say that they are still working on a solution.

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                        • #42
                          Since the ECU firmware update earlier this year the regen process seems to have become speed dependent.
                          I am currently driving around 340Kms between regens around the city when doing 40-60-80Kms/hr. The regens take 10-20Kms, a little better than pre ECU update.
                          But out on the open highway the regens occur around every 150Kms (sometimes even less) when doing 100-110Kms/hr. The regens take about 30Kms, substantially better than pre ECU update.

                          I have a 2018 GXL with just under 45,000Kms on the clock. At 50,000Kms I'll have another go at getting the DPF manual button to work in custom mode 2, I've found a dealer who has done it successfully.
                          I'll post all my DPF stats to date as well.
                          RPP
                          Senior Member
                          Last edited by RPP; 16-10-2019, 05:24 PM.

                          Comment


                          • #43
                            Originally posted by jasaly01 View Post
                            I recently went in for the 7th time with DPF issues and the Toyota DPF expert? turned my warning light on so when the car is doing a burn it flashes. I have just done a trip towing my caravan roughly 1000kms and I did 5 burns in that time, excessive I think but toyota seems it is ok. I used to get 8.7ltr/100km and now am struggling to get 11.3 ltrs/100km. According to Toyota this is normal, they truely have no idea and I am assuming the cars fuel consumption is due to the increase in burns it does.
                            Surely they can be taken to task over this. Their own sales figures quote 8.0L per 100 combined cycle.

                            Comment


                            • #44
                              Originally posted by JohnLynn View Post
                              Yes I agree that 200 Km per regen seems high, under light load the interval is over 300.
                              I dream about 200 km, mine has been as low as 90 but consistently 100-150(between end of one and start of next Burn). I live in Central Australia, about 75% of my driving is highway , Manual, in 5 or 6 gear 100-110km, mainly unladen, so a 300/350 km day trip ,might have a burn leaving town, one on the trip and one before getting back to town. Gave data from trip to Kakadu/Darwin and home as well.
                              Despite taking photos of the dash/speedo showing when burns start and finish Toyota are still saying DPF is working fine.

                              Comment


                              • #45
                                Right now i’m Following (at distance) a stinking white smoke billowing hilux, highway south of Taree.
                                Oh what a feeling, nausea.

                                Comment

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