LS SAYS A REGEN EVERY 2 HOURS IS NORMAL

[MinnesotaEric]

@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.

FWIW, in cooler to cold places the field repair on T4 engines was to put in a warmer thermostat so the engine runs warm enough to heat up the DPF as well as so the engine doesn't clog up the DPF media with soot from the rich/cold fuel map. For example my Kioti came with a 160°F T-stat and I put in a 180°F T-stat. I would have preferred a 195°F T-stat but I could not find a proper swap that would work.

 

[GS650GL]

Just so everyone is aware, the new software for LS turbocharged engines now has a turbo protection feature added. After starting, the engine needs to idle for several seconds to get oil pressure to the turbo before throttling up. If you try to throttle up immediately before there is enough oil pressure, or start it with throttle not at idle, the throttle won't respond and the RPM may surge up and down slightly. This is to alert you that this feature is active, and you will need to throttle back down to idle to reset it. Then the throttle will respond normally. Just a heads up in case anyone sees this so you will know what is happening and won't think there is something wrong.

 

[Midniteoyl]

Just so everyone is aware, the new software for LS turbocharged engines now has a turbo protection feature added. After starting, the engine needs to idle for several seconds to get oil pressure to the turbo before throttling up. If you try to throttle up immediately before there is enough oil pressure, or start it with throttle not at idle, the throttle won't respond and the RPM may surge up and down slightly. This is to alert you that this feature is active, and you will need to throttle back down to idle to reset it. Then the throttle will respond normally. Just a heads up in case anyone sees this so you will know what is happening and won't think there is something wrong.

Seems like a reasonable precaution. The throttle on my Kioti is always at idle at start-up, even if I left it wide open at shut-down. You must pull the throttle to idle before it will respond again.

 

[the old grind]

Wouldn't that be nice in any/every turbo, diesel or gas?

If it's in the software, why not include a delayed shutdown, say 30 sec to a min or two after the key is switched off?

Couldn't be that difficult, could it?

 

[shooterdon]

Wouldn't that be nice in any/every turbo, diesel or gas?

If it's in the software, why not include a delayed shutdown, say 30 sec to a min or two after the key is switched off?

Couldn't be that difficult, could it?

On my LS they recommend two minutes at idle before shutting down. It is a PITA when I am processing logs into firewood. Sitting there waiting to turn it off.

 

[CloverKnollFarms]

I can see a liability issue if you delay the shut down of equipment. There may be instances where you want it off, now.

In the jet I flew for 20 years, we required a 2 minutes cool down before engine off. The engines had highly sophisticated software, and we still had the ability to immediately shut it down, wen if it did seize a 5 million dollar engine.

 

[Bearsixty7]

I can see a liability issue if you delay the shut down of equipment. There may be instances where you want it off, now.

In the jet I flew for 20 years, we required a 2 minutes cool down before engine off. The engines had highly sophisticated software, and we still had the ability to immediately shut it down, wen if it did seize a 5 million dollar engine.

I recall something for diesel pickups several years ago that after you turn off the key and exited would idle the engine for 2 minutes then shut off. If you needed immediate shutdown, tap the brake pedal. That would be easy enough to incorporate into these tractors.

 

[deezler]

Wouldn't that be nice in any/every turbo, diesel or gas?

If it's in the software, why not include a delayed shutdown, say 30 sec to a min or two after the key is switched off?

No way, thats not allowable as a default. When you need to turn the engine off, you need to be able to turn it OFF NOW. Say you had a hydraulic system leak, a coolant leak, oil, etc. Or you pull into your garage with no fresh air. I could probably think of a hundred reasons why I want immediate shut down on my internal combustion engine and piece of heavy equipment. If an optional feature with quick on/off switch, then sure.

One variant of this idea is coolant and/or oil "over-run" pumps. Electric, supplemental pumps for keeping coolant and oil moving after you have shut the key off, to allow things to cool down more. My '19 turbocharged F150 does this for coolant, and so did my '19 volkswagen.

I used to have an aftermarket "turbo-timer" in my 1990 Mitsubishi Eclipse, that I could set for 1 or two minutes of idling before shut down. I used to drive it around town like a real @$$h*le and screech right into a parking lot, but I knew I needed fresh oil and coolant pumped through my turbocharger for a bit while it cooled down.

@shooterdon , just my opinion, but you really don't need to idle for 2 minutes if you've been driving calmly. The only time you need a prolonged idle period before shutdown is if you had been doing heavy full-load work immediately prior. If you're just loafing around the yard transporting firewood, the engine is cool enough to shut right off, and two minutes of idling does almost nothing at all to cool it down further.

 

[Cycledude]

I don’t start or shut off my LS at the recommended 1,000 rpm’s , just seems a little to rough running that slow, I use 1,200 rpm’s instead it just seems much smoother and i doubt it makes much if any real difference.

 

[shooterdon]

No way, thats not allowable as a default. When you need to turn the engine off, you need to be able to turn it OFF NOW. Say you had a hydraulic system leak, a coolant leak, oil, etc. Or you pull into your garage with no fresh air. I could probably think of a hundred reasons why I want immediate shut down on my internal combustion engine and piece of heavy equipment. If an optional feature with quick on/off switch, then sure.

One variant of this idea is coolant and/or oil "over-run" pumps. Electric, supplemental pumps for keeping coolant and oil moving after you have shut the key off, to allow things to cool down more. My '19 turbocharged F150 does this for coolant, and so did my '19 volkswagen.

I used to have an aftermarket "turbo-timer" in my 1990 Mitsubishi Eclipse, that I could set for 1 or two minutes of idling before shut down. I used to drive it around town like a real @$$h*le and screech right into a parking lot, but I knew I needed fresh oil and coolant pumped through my turbocharger for a bit while it cooled down.

@shooterdon , just my opinion, but you really don't need to idle for 2 minutes if you've been driving calmly. The only time you need a prolonged idle period before shutdown is if you had been doing heavy full-load work immediately prior. If you're just loafing around the yard transporting firewood, the engine is cool enough to shut right off, and two minutes of idling does almost nothing at all to cool it down further.

Deezler, I normally run 1600-1700 when going firewood. Actually never operate less unless getting off and on changing an implement, moving something or wrapping a chain around something.

Still think I do not need to idle before shutting down?