2H drive

[hoch]

What was weird was after coming out of the woods and I have never had this happen … it’s like it was no in gear. And when I went to accelerate… the engine just rev’d. And I finally got it to go. But I never saw 2H highlighted.

Yesterday I went down the road and it did the same thing and I couldn’t figure it out unless I was in neutral obviously.

I have since this morning gone and put it in 2H. So going forward like I have always done .. put it in neutral, pull down to 4H in the woods and I should be fine. Then when I come out just put it back in 2H.

I’ve done this before for 3 years and it’s never been a problem I’ve just never seen 2H illuminated … or I’m just dense lol

You may want to check the transfer case lever adjustment, on the link I noted above. Perhaps it’s not engaging back into 2H due to the adjustment being out of spec. It’s easy to do.

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[Tiger4Life]

You may want to check the transfer case lever adjustment, on the link I noted above. Perhaps it’s not engaging back into 2H due to the adjustment being out of spec. It’s easy to do.

Thx Hoch

 

[Tiger4Life]

As others have said - we need a bit more information from you before we can comment.
The owners manual has all this stuff explained BTW.

1. There are two different 4wd transfer case types.
a. one of them has 4wd auto plus 2H, 4Hauto, 4H part time, neutral, and 4Lo. This is the more expensive option.

b. the other one only has 2H, 4H, neutral, and 4Lo - this is the standard old school 4wd

2H should be your normal driving mode for city and highway in good weather. It will give you the best gas mileage. You can drive at any legal speed

4H can also be driven at any safe speed, but ... should only be used in slippery conditions.
Do NOT drive in 4H (4H part time) on dry pavement when you have good traction on all 4 wheels. This mode locks the front and rear axles so they turn at the same speed and is designed for when you have some wheel slippage on dirt roads, snow, etc. On a dry road you will either put stress on the drive shaft or you will chirp the tires as you turn corners and such.

For those who have 4H Auto - it has a clutch system that allows you to leave it on all the time. Set it and forget it ... at a small cost to gas mileage. This is similar to an AWD - all wheel drive system.

N is for flat towing

4L is for when you need high torque and low speed.

Read your owners manual

Yeah I guess I should have pulled out the owners manual lol. I have driven 4WD before and never had a problem. This is just my first Jeep. Back in my day we had to get out and lock the hubs lol.

mine in your pics is option b. I do t have the auto.

 

[Cutterone]

I think the Select-Trac should have been made the standard transfer case for the JL in Sport and Sahara trims. Leave the Part time system with iron U-joints for the Rubi. I know thats not a popular opinion on here but after 30 years of driving nothing put Part time trucks ands Jeeps, I want the option to just put it in 4Auto for the on again off again, is it slippery, is it not winters up here in NH... I would have sought out one with 4Auto but still wanted a 6sp and I don't believe that combo was ever an option. Now I think you have to get a RubiX or 4xe to get select-trac, or the full time system in the 392... I don't think its even an option on the Sport, Sahara, or Willys...

 

[richk225]

With the 392 I have no choice of 2 wd
Unless I use my Tazer to get it to go into 2 wd
I haven’t tried it yet, my luck the transfer case will explode

 

[Heimkehr]

With the 392 I have no choice of 2 wd
Unless I use my Tazer to get it to go into 2 wd
I haven’t tried it yet, my luck the transfer case will explode

It'd be interesting to know how a software hack device like the Tazer could override the mechanical construction and functioning of the 392's 4WD-only transfer case...unless the latter uses its own software to camouflage a hidden-but-possible 2HI function?

Just curious.

 

[TwelveGaugeSage]

With the 392 I have no choice of 2 wd
Unless I use my Tazer to get it to go into 2 wd
I haven’t tried it yet, my luck the transfer case will explode

Give it a go with the Tazer. Full-time 4WD has its place, but it will never be more fun than RWD. What good is all that power if you aren't using it to slide around corners and initiate a little throttle steer? Please start slow though. I don't need to log on and see a thread titled "TwelveGaugeSage made me roll my 392".

Don't forget to turn off your traction control or it will suck the fun right out of it. Honestly, making traction control something I have to turn on instead of something I get in and turn off is the biggest draw to Tazer for me. Oh, and please have fun responsibly. There is a fine line between "Spirited Fun" and "Dangerous Lunatic"

 

[TwelveGaugeSage]

It'd be interesting to know how a software hack device like the Tazer could override the mechanical construction and functioning of the 392's 4WD-only transfer case...unless the latter uses its own software to camouflage a hidden-but-possible 2HI function?

Just curious.

I'm pretty sure you can use "2-Low" with a Tazer. This should be a similar concept. It would just prevent any power transfer to the front diff as opposed to using the FAD.

 

[Beaching631]

Sort of related to this thread: does anyone drive 4H in just plain-old rain on pavement? My Jeep is all over the place in the rain in 2H especially if traveling downhill

 

[hoch]

Sort of related to this thread: does anyone drive 4H in just plain-old rain on pavement? My Jeep is all over the place in the rain in 2H especially if traveling downhill

How are your tires?
I *can* make the rear end slide out in rain, but other than that, if I’m driving sensibly, it’s fine in 2wd.

 

[zouch]

yes, routinely.

Sort of related to this thread: does anyone drive 4H in just plain-old rain on pavement? My Jeep is all over the place in the rain in 2H especially if traveling downhill

 

[Heimkehr]

I'm pretty sure you can use "2-Low" with a Tazer. This should be a similar concept. It would just prevent any power transfer to the front diff as opposed to using the FAD.

There's a genuine 2LO function available? ? Color me interested. Is that a Tazer function for just the 392, or is it available/possible on other engines & transmissions?

does anyone drive 4H in just plain-old rain on pavement? My Jeep is all over the place in the rain in 2H especially if traveling downhill

I've done it a few times, during sustained heavy rainfall and when traveling on divided, 4-lane roadways that are local to me. While I didn't notice any axle binding or wheel hop (nor was I expecting any when traveling on reasonably straight asphalt), there was just enough of a hint of pulling, so to speak, from the front to be a bit off-putting. I'd then shift back to 2HI and lift my right foot a little more in recognizance of standing water here and there.

 

[DewHawk]

I'm one of those hybrid weirdos that has 4H Auto available. Unless the weather turns sketchy, I leave it in 2H. The rest of the 4xe owners swear up and down I'm leaving performance on the table but with 37's bolted on, I notice a pretty negligible difference to be honest. The damn thing still chirps the tires from a stop if I romp on it at my elevation in 2H and that's good enough for me.

 

[DewHawk]

With the 392 I have no choice of 2 wd
Unless I use my Tazer to get it to go into 2 wd
I haven’t tried it yet, my luck the transfer case will explode

You've got the same transfer case model as the 4xe. Difference is you're locked out of 2H by a lever and some programming and you don't get the 4:1 crawl ratio that the 4xe Rubicon has (I suspect the only reason we even get it is for electric only mode). I've yet to see ANY 4xe blow the transfer case in 2H (same torque figures as 392) from a stand still. Give the tazer a shot and see what you think. Might give you some more mileage before you need to replace the fluid. ?‍

 

[C.Sco]

You've got the same transfer case model as the 4xe. Difference is you're locked out of 2H by a lever and some programming and you don't get the 4:1 crawl ratio that the 4xe Rubicon has (I suspect the only reason we even get it is for electric only mode). I've yet to see ANY 4xe blow the transfer case in 2H (same torque figures as 392) from a stand still. Give the tazer a shot and see what you think. Might give you some more mileage before you need to replace the fluid. ?‍

Indeed, Jeep "hid" the 2hi function in the transfer case on the 392's, I believe their reasoning was probably something along the lines of "this engine has too damn much horsepower to be safe to drive in 2wd". The Tazer allows you to access the hidden 2Hi mode.

Also a 4xe owner here, and I agree with you that I also just leave mine in 2hi 95% of the time. No reason to waste gas spinning the front driveshaft for no reason when I'm just commuting on the highway to work. The torque/hp is the same as 4hi when you're at highway speeds, it only gets throttled in 2hi at lower speeds, say < 30mph or so.

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