Join Date: Mar 2006
Location: Helsinki, Finland - on the European side of the Atlantic
4low isn't for driving around in. It's for when you need maximum torque at low speed and I don't think it will shift to second. If you drive it in 4low for anything more than like 5mph or so you're asking for trouble.
What you wrote above is 100% nonsense, and not true at all. You use 4lo when you need it, and as high speeds as you need it. The only places where you cause extra strain slamming the skinny pedal in 4lo are the axles and the TC planetary gear (+ mainshaft, which you really cannot break too easily). edit: I'm talking about wheeling here. Obviously 4lo is not meant to be used for driving around paved roads.
4lo is fine up to OD redline if you need it, ie. certain type of mudbogs or snow. I wouldn't try to redline it on dry slickrock though
I have the same problem of my tranny not coming out of 1st gear on 4lo on my niner. I have not found the reason for it - and it makes wheeling it pretty crappy at times. If it is really designed in a way that on 4lo the main tranny stays in 1st, it's really stupid.
1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...
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1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***