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Is there a documented top speed when running 4H Auto or 4H Oart-time?

Jimrf

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Is there a documented top speed when running in 4H Auto or Part-time?
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ucijeepguy

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I've had mine up to 65mph in 4hi. It was during the ice storm and forgot to take it out once I got out of a sketch area. no issues, but I wouldn't do it again if i were paying again.
 

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Theoretically speaking you should be able to run all the way to the limiter in 4hi or 4auto. I wouldn’t worry about it in 4auto, but if the conditions you’re in warrant locking it in 4high then you probably should t be doing north of 95 mph.
 

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Really? If you need to be in 4 anything you should be doing over any speed limits.
But 4 auto doesn't care a rip.
4H - if you need that you are really not long for this world if you are going over 65.
And if you are running 65 in 4H on a dry road, your truck isn't long for this world..........

Funny thing, there's another thread with almost the same name asking exactly the same question.
 
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Jimrf

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Is there a documented top speed when running in 4H Auto or Part-time?
Running in and out of heavy rain and potential slick roads and was wondering if I can keep it in 4H Auto between storms. Thanks for the responses. I now know I can run it in 4H Auto at highway speed.
 

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jsalbre

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Actually, I should clarify. I’ve done over 65 in 4hi on rough, potholed, washboard dirt roads. But that’s kind of what the Mojave excels at.

I’d never have tried that in any of my other Jeeps in the past, and wouldn’t have dreamed of it in my Ram 2500.
 

ShadowsPapa

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Running in and out of heavy rain and potential slick roads and was wondering if I can keep it in 4H Auto between storms. Thanks for the responses. I now know I can run it in 4H Auto at highway speed.
Absolutely! No problem at all with that.
That's why I WISH mine had 4 auto - our storms and our snows mean that it may be slick for 100 yards and then dry as a bone for 1/8 mile then a drift, then dry, then ice, then dry.
 

ShadowsPapa

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Actually, I should clarify. I’ve done over 65 in 4hi on rough, potholed, washboard dirt roads. But that’s kind of what the Mojave excels at.

I’d never have tried that in any of my other Jeeps in the past, and wouldn’t have dreamed of it in my Ram 2500.
But your wheels are slipping there - dirt, pot holes, washboard roads - the latter causing wheels to spin as they bounce off the road anyway.
 

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Really? If you need to be in 4 anything you should be doing over any speed limits.
But 4 auto doesn't care a rip.
4H - if you need that you are really not long for this world if you are going over 65.
And if you are running 65 in 4H on a dry road, your truck isn't long for this world..........

Funny thing, there's another thread with almost the same name asking exactly the same question.
I had the same thought. If you need to be in 4H then you probably shouldn't be going 'fast' to begin with.

4 wheel drive isn't some magic traction spell that makes slippery things not slippery. It just helps find some traction when 1 or 2 other wheels slip. Lose traction on all 4 at once speeding, well good luck.
 

ShadowsPapa

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I had the same thought. If you need to be in 4H then you probably shouldn't be going 'fast' to begin with.

4 wheel drive isn't some magic traction spell that makes slippery things not slippery. It just helps find some traction when 1 or 2 other wheels slip. Lose traction on all 4 at once speeding, well good luck.
Oddly enough around here in the winter it's the 4x4 trucks and SUVs that slip off the road. Oh you see the 2 wheel drive cars, etc. - but over half of them I bet are front wheel drive and they feel they have more ability with those, but it's similar - you can go but not necessarily control it.
 

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jsalbre

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But your wheels are slipping there - dirt, pot holes, washboard roads - the latter causing wheels to spin as they bounce off the road anyway.
Oh yeah, definitely a low traction situation. I was just adjusting my previous comment about there not being a situation where you should be at high speed in 4hi.

It’s not common, and even less common traditionally for Jeeps.
 

JDChris

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Oddly enough around here in the winter it's the 4x4 trucks and SUVs that slip off the road. Oh you see the 2 wheel drive cars, etc. - but over half of them I bet are front wheel drive and they feel they have more ability with those, but it's similar - you can go but not necessarily control it.
Here in Michigan too. Too many people who own AWD or 4X4 vehicles think they can go as fast as they want in any condition. You might have traction going forward, but you don't have any more traction when it comes to stopping.

One of the reasons I got the 4 Auto in the JT I ordered was the ability to "Set it and forget it."
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