Well that's frustrating, just when I start to think I might have a cause somebody blows up my theory. it does seem that one consistent correlation is large tires. So torque may very well have a lot to do with it, ie, software.
that's weird and frustrating. Did you ever turn it off and let it sit for a while or did you just drive it straight through? because I have found that if I don't turn it off it will continue to drop even at high speeds.
I haven’t tried the turn it off thing, I didn’t want to take the chance it wouldn’t start way out in the middle of no where, both time Baja it back closer to civilization tell it died than it is to low to even jump, hey at least this time it didn’t smell like it was burning to the ground, kind wish it would at this point though
1st time was all stock with just 35s so I don’t know if that would really count as large tires and they where aired at about 25 psi if I remember correctly, this time I did have 38s but was running 35 because I was being lazy and trail wasn’t really that hard
I live at 7300 feet and this was maybe 9-10. I cut my vents and liners the day before to help get heat out because I get tired of hearing the fans a lot when out wheeling and it did seam to help with keeping them from coming on. No AC at the time this happened and only a cell plugged in charging. It did die and pop out of 4 low(seams like a common thing also dealer says they can’t fix) and once restarted is when its didn’t want to charge. If it does it again when I get it back will definitely try the shit down and restart and see what happens.
I’m seriously thinking this might be it for me, I don’t want something that I’m always gonna be worried about. I have had several Grand Cherokees that I have lifted and done a lot of modes to run up to 37s on and may just go back that route, or find an old CJ or Bronco and just get away from all the computer crap altogether
so it's a damn shame that this is what I call a "solution" , but you have to turn it off once it dies / starts to die, otherwise you will absolutely fry the system. That's what I did up at Holy Cross out of frustration: just kept driving it and driving it hoping that it would cause so much damage that they would have to fix it. Uunfortunately the only thing that got permanently fried was the radio screen. The engine fixed itself once I was on the highway and I went nine months without a radio or screen.
Keep us posted with your results please. I'm already strongly considering the Superchips PCM swap, this would push me over the edge to do it sooner.
Can you elaborate on this? Sounds like you are saying the JL has some sort of electronic torque limiting to prevent damage to the 4Lo transfer case and this causing an excessive electrical load on the electrical system, thus draining our batteries?
The JL 2.0t with etorque has torque limiting from the factory in 4LO. After 2+ years of wheeling, the low voltage issue that is common to many of us with the 2.0t etorque has happened to us ~10 times. Every time it happens we were in 4LO, so I became militant about watching voltage when off road, especially if I need 4LO. Without fail, if we stop in drive for more than a few seconds, voltage begins to fall. Quick shift back to 4 high and the voltage goes right back up. I can’t say how or why, or if my theory holds true, but I think the same software that limits torque is somehow limiting charging. Yes, in theory I will be more likely to break an axle shaft without the torque limiting, but I’m not in 4lo because I want less torque. I’m hoping it works, but it’s all theory at this point. On the bright side, the extra torque at lower rpms from the tune will allow me to wheel more comfortably in 4HI even if my weird 4LO voltage drop remains.
