Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Trouble Shooting/Problems/Service (http://www.jeepgarage.org/f107/)
-   -   4-Low Clunk on switching in/out? (http://www.jeepgarage.org/f107/4-low-clunk-on-switching-in-out-28440.html)

rovinrail 09-12-2011 12:20 PM

4-Low Clunk on switching in/out?
 
:confused: 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

vikingdave 09-12-2011 12:58 PM

Re: 4-Low Clunk on switching in/out?
 
Quote:

Originally Posted by rovinrail (Post 483277)
:confused: 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.

rovinrail 09-12-2011 01:11 PM

Re: 4-Low Clunk on switching in/out?
 
Quote:

Originally Posted by vikingdave (Post 483312)
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.

jgc4ever 09-12-2011 01:56 PM

Re: 4-Low Clunk on switching in/out?
 
Quote:

Originally Posted by rovinrail (Post 483326)
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.

AAAA 09-12-2011 02:13 PM

Re: 4-Low Clunk on switching in/out?
 
Gears may not mesh if not moving a very little.

Cherodude 09-12-2011 03:11 PM

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.

01grand 09-12-2011 03:25 PM

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.

rovinrail 09-13-2011 05:25 AM

Re: 4-Low Clunk on switching in/out?
 
Thanks all! I will try that and see if that sounds a bit better.

rovinrail 09-13-2011 12:03 PM

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.

pwguy 09-13-2011 12:11 PM

Re: 4-Low Clunk on switching in/out?
 
Quote:

Originally Posted by rovinrail (Post 483886)
... 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.

1200RT-P 09-13-2011 01:44 PM

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.

rovinrail 09-13-2011 01:59 PM

Re: 4-Low Clunk on switching in/out?
 
Quote:

Originally Posted by 1200RT-P (Post 483942)
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!


All times are GMT -5. The time now is 01:40 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community