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Old 09-12-2011, 12:20 PM
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4-Low Clunk on switching in/out?

Finally got the chance yesterday to play with the 4-Low and Hill descent...

And like the title says, I got a "clunk" when switching in to 4-low, and a louder clunk when turning it off. During my drive, I went in and out of it a couple of times, and each time got the same, loud metallic clunk.

My question: is this normal/expected? I haven't had a vehicle with 4-Low since my Dad's old F-150, so I really can't remember. thanks!

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Old 09-12-2011, 12:58 PM
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Question Re: 4-Low Clunk on switching in/out?

Quote:
Originally Posted by rovinrail View Post
Finally got the chance yesterday to play with the 4-Low and Hill descent...

And like the title says, I got a "clunk" when switching in to 4-low, and a louder clunk when turning it off. During my drive, I went in and out of it a couple of times, and each time got the same, loud metallic clunk.

My question: is this normal/expected? I haven't had a vehicle with 4-Low since my Dad's old F-150, so I really can't remember. thanks!

Vehicle: 2011 Overland
HEMI
ORII
ACC
Shouldn't clunk at all. Make sure you are in Neutral and moving no faster than a couple MPH when going in and out of 4 Low.
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Old 09-12-2011, 01:11 PM
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Re: 4-Low Clunk on switching in/out?

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Originally Posted by vikingdave View Post
Shouldn't clunk at all. Make sure you are in Neutral and moving no faster than a couple MPH when going in and out of 4 Low.
Was at neutral and dead stop to switch both in and out of 4 low.
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Old 09-12-2011, 01:56 PM
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Re: 4-Low Clunk on switching in/out?

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Originally Posted by rovinrail View Post
Was at neutral and dead stop to switch both in and out of 4 low.
I think I read somewhere it works best if you engage it while you are rolling between 1 - 3 mph.
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Old 09-12-2011, 02:13 PM
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Re: 4-Low Clunk on switching in/out?

Gears may not mesh if not moving a very little.
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Old 09-12-2011, 03:11 PM
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Re: 4-Low Clunk on switching in/out?

I agree -- shifts to and from 4Lo best if rolling slowly in Neutral. Usually no sound at all, but sometimes a faint clunk.
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Old 09-12-2011, 03:25 PM
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Re: 4-Low Clunk on switching in/out?

If it works the same as all other Jeep 4low transfer cases you need to be rolling about 2-3mph, shift transmission to neutral, then engage/disengage 4low and then shift back to drive. There may be some noise as the gears change but it shouldn't be overly loud.
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Old 09-13-2011, 05:25 AM
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Re: 4-Low Clunk on switching in/out?

Thanks all! I will try that and see if that sounds a bit better.
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Old 09-13-2011, 12:03 PM
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Re: 4-Low Clunk on switching in/out?

... and, nope. still has a loud clunk, rolling in neutral. takes a couple of presses on the button, too, to engage. I guess it's time for the shop.
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Old 09-13-2011, 12:11 PM
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Re: 4-Low Clunk on switching in/out?

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Originally Posted by rovinrail View Post
... and, nope. still has a loud clunk, rolling in neutral. takes a couple of presses on the button, too, to engage. I guess it's time for the shop.
That's about how mine works, can take several tries and there tends to be a noise. It has always seemed perfectly normal to me considering what is happening. Maybe a background with the big manual levers of yore colors my view on it.
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Old 09-13-2011, 01:44 PM
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Re: 4-Low Clunk on switching in/out?

the first few (5, maybe) times i engaged 4 low it made a similar noise. it has more or less gone away.
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Old 09-13-2011, 01:59 PM
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Re: 4-Low Clunk on switching in/out?

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Originally Posted by 1200RT-P View Post
the first few (5, maybe) times i engaged 4 low it made a similar noise. it has more or less gone away.
Then maybe a few more tries, see if it is just a break-in thing-- but I won't be out of town while I do it. I do like this car, but don't want to get stranded!
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