LS SAYS A REGEN EVERY 2 HOURS IS NORMAL (Update) 600hrs, 50 regens

[CloverKnollFarms]

Wow

 

[Williy]

IMHO it appears that the engine is not burning fuel
like it should causing too much soot. Could be pouring
in too much fuel, lifters not set right wonder if they put
the correct cam in if everything else checks out

willy

 

[TimberFarm]

I posted a while back about my 573 doing it's first regen at just under 50 hrs and my suspicion that it may be timer related.
Today I hit 99.3 hrs and sure enough my Regen light came on and about 3 mins later it went into Regen mode. It took a little over 20 mins to complete it's Regen which is about the same as far as I can remember for the first one.

 

[jyoutz]

Common rail fuel system controlled by ECM can only have emissions deleted if someone makes a delete kit for that engine that will fool the ECM into thinking that everything is good by sending false signals to the ECM, instead of the real signals from the sensors. (emulator) Otherwise, the ECM won't let the engine run. ECM's are required by law to have anti-tamper features in the engine control software programmed into them, otherwise it would be too easy to bypass. Companies make delete kits for trucks and some large farm tractors, but I doubt anyone makes a kit for LS tractor engines. Don't forget, our government mandated all this BS, so the manufacturers, dealers, and customers have no control over it. And the US, Canada, and European countries are the only ones using these emissions systems. The rest of the world doesn't, so it's pointless. They can pollute all they want. You could block off the EGR tube between the EGR cooler and EGR valve, and that will prevent exhaust from going into the intake manifold so the engine runs cleaner. The ECM won't know it and the DPF will get less soot so it might regen less often. Engines don't like to run on their own exhaust by having dirty exhaust pumped into the intake manifold, they like clean fresh air just like us.

Your comment sounds like you’re making a universal statement about tier 4 tractors. Mine only regenerates every 70 hours and only for about 15 minutes. I’m suggesting that some companies do a better job with the technology than others and it’s not a one size fits all situation.

 

[Andre1196]

I'd like to give some input in case it helps someone else.

I have a NH Boomer 55, which is pretty much a LS, and I was experiencing frequent regens (sometimes 3 hours, sometimes 6-7 hours) until one day the tractor simply went into limp mode and threw some codes related to the EGR. I was told by my dealer that New Holland acknowledges that there have been issues with tractors going into regen with too much frequency. I was also told that there were instructions from the brand to replace the EGR and update the software, so we went ahead and did that, and somehow the tractor got even worse, going into regen every hour or so and eventually going back to limp mode again. I got it towed to the dealer again, and they've replaced the ECU, and so far I'm 15 hours in regen free, so it seems to have fixed something.

My warranty ended 1 month before but luckily the dealer covered everything (around 5k just in parts) and also asked me to keep track of the time between regens so they could report back to the brand.

 

[JCoastie]

@Andre1196 Thanks for that. They have replaced both the EGR Valve and the ECU on mine (also all 3 injectors, the DPF sensor, and cleaned the DPF) unfortunately it has not made a difference on my tractor. Hope yours is fixed.

 

[Andre1196]

@JCoastie I was finally able to get this issue sorted. It turns out the issue is software related, and the DPF is not getting hot enough to regen properly. I'm located in Europe, and my dealership pressured LS so much that they flew engineers from Korea to try and solve this, since lots of tractors were dealing with this issue. They left the tractor running on some experimental software that immediately increased the regen intervals, and since then I've got another software update from the dealership that seemingly fixed the issues completely. The DPF was getting somewhere around 550 Celsius, and after the update it's getting up to 630 or something like that. I can't remember the exact numbers. Since that update, the shortest regen intervals I had were about 35 hours.

 

[jyoutz]

@JCoastie I was finally able to get this issue sorted. It turns out the issue is software related, and the DPF is not getting hot enough to regen properly. I'm located in Europe, and my dealership pressured LS so much that they flew engineers from Korea to try and solve this, since lots of tractors were dealing with this issue. They left the tractor running on some experimental software that immediately increased the regen intervals, and since then I've got another software update from the dealership that seemingly fixed the issues completely. The DPF was getting somewhere around 550 Celsius, and after the update it's getting up to 630 or something like that. I can't remember the exact numbers. Since that update, the shortest regen intervals I had were about 35 hours.

Nice, and kudos to your dealer for pursuing this.

 

[sd455dan]

Nice, and kudos to your dealer for pursuing this.

Wow almost 250 posts and finally a solution. Lot of parts changers at dealers before the factory engineers finally dealt with the root cause.

LS likely would have saved money in the long run had they started with this approach versus leaving the dealer service techs/shops to try everything else first. Would have saved a whole lot of headaches and irritation for new tractor owners as well for over two years.

Good on that dealer for pushing. Great that the owners can really enjoy using their tractors without worry about regens in a couple hours.

 

[TractorTYMe]

Happy you found a solution, frankly all these emissions problems prohibited me from buying an LS when U was getting serious with buying a tractor back in 2020. I was looking hard and found all their layout and design attractive and all, but all the forum reports of emissions and regen scared me into buying a mechanical injected tractor.

 

[Cycledude]

I have not experienced the way to often regeneration issues but it’s great to hear they may have finally found out what’s actually causing it to happen and how to fix it

 

[deezler]

@JCoastieThe DPF was getting somewhere around 550 Celsius, and after the update it's getting up to 630 or something like that. I can't remember the exact numbers. Since that update, the shortest regen intervals I had were about 35 hours.

Thats good for your DPF regeneration, but what did they change to accomplish this temperature change? The only knobs they would have to turn to affect DPF/exhaust temperatures is from diesel injection and combustion in-cylinder for your engine.

Not sure how carefully you track your tractor's fuel consumption, but it might be a little higher now!

 

[Cycledude]

Thats good for your DPF regeneration, but what did they change to accomplish this temperature change? The only knobs they would have to turn to affect DPF/exhaust temperatures is from diesel injection and combustion in-cylinder for your engine.

Not sure how carefully you track your tractor's fuel consumption, but it might be a little higher now!

I’m guessing the fuel consumption per hour will now be less, sounds like they didn’t turn nobs they updated the software to make it run better.

 

[deezler]

I’m guessing the fuel consumption per hour will now be less, sounds like they didn’t turn nobs they updated the software to make it run better.

Lol, "knobs to turn" is a figure of speech meaning "what variables did they have available to adjust". Sorry, engineering speak I guess.

Updating the software to "make it run better", resulting in increased temperatures in the exhaust, can really only be done by adjusting the timing and/or quantity of fuel injections. You have more energy in your exhaust pipes now; where did it come from? Fuel. If the engine could run more efficiently this way, LS would have calibrated the engine that way from the factory originally. My guess is that they were working a balance of goals including fuel efficiency, emissions compliance, and DPF regen frequency. It's a complicated dance to calibrate a new engine and emissions control system; but if they shipped tractors with a 2-10 hour regen frequency, that can be fixed easily with a new engine calibration flash that bumps it out to 35+ hours, it's a pretty bad indictment of their engineering quality in the first place.

But to be fair, Kubota went through this same issue with their B3350 tractor. It's difficult!

 

[DarkBlack]

Maybe the software is only modifying the normal injection timing, during a regen period only.

 

[CloverKnollFarms]

Still curious why a TYM will run 200-400 hours, or more, between regens, and other units are so much less.

 

[Andre1196]

Thats good for your DPF regeneration, but what did they change to accomplish this temperature change? The only knobs they would have to turn to affect DPF/exhaust temperatures is from diesel injection and combustion in-cylinder for your engine.

Not sure how carefully you track your tractor's fuel consumption, but it might be a little higher now!

Can't say for sure what was changed. As for the fuel consumption I haven't noticed anything different but I suppose even if it is a bit higher its hard to tell the difference, since the tractor going into regen all the time also ended up wasting some fuel.

 

[ptsg]

Can't say for sure what was changed. As for the fuel consumption I haven't noticed anything different but I suppose even if it is a bit higher its hard to tell the difference, since the tractor going into regen all the time also ended up wasting some fuel.

Nice tractor! Andaste no combate ao fogo? Pela foto esteve perto.

 

[garry1p]

I'm wondering if the software update is common knowledge at the dealership I have one of the every 12 hour regeners.

 

[Andre1196]

I'm wondering if the software update is common knowledge at the dealership I have one of the every 12 hour regeners.

I would think so. I was told by my dealership that the new tractors being delivered are no longer coming with this issue.