Ok Ladies n gents… Im working on a friends 02’ Jeep Liberty. Here is the problem as I interpret it. As I drive this vehicle I believe I am hearing intermittent Clunks coming from the Xfer case…
As you drive this vehicle down the road you will hear intermittent clunking coming from the xfer case…its fairly pronounced. Im trying to wrap my head around the source of the issue. This owner does NOT use 4WD very often. However they do from time to time… The way the Liberty’s 4WD system works is as follows. The front differential is constantly spinning its driveshaft, there are NO WHEEL HUBS to lock…they are permanently locked and turning the driveshaft…the primary drive of this vehicle goes to or thru the rear diff so it is RWD until you lock the xfer case to power the front driveshaft. When you engage 4WD you are locking the xfer case into gear and thus now driving the front driveshaft as well as the rear.
My THEORY is as follows. Going INTO 4WD works fine…my idea is that it is not ENTIRELY DISENGAGING in the XFER CASE…This is where I believe the THUNKS are coming from…From the Xfer case partially engaging the front driveshaft intermittently. I can INDUCE MORE THUNKING sounds if I turn the front wheels HARD LEFT OR RIGHT.
What I need to know or rather RENFORCE in my head is this… DOES my front driveshaft increase speed when I turn the front wheels Hard left or right? WOULDNT IT THO? If the outer wheel in the turn must speed up…and the inner slow down…WOULD THIS NOT cause a difference in rotational speed of my driveshafts? I believe IT DOES…CORRECT me if I am wrong please.
If during a turn…my front driveshaft must speed up partially this would explain why I can hear MORE THUNKING during turns…because the driveshaft speeds are no longer equal as they would be driving straight down the road.
I BELIEVE that the Xfer case in this vehicle…which entirely controls the 4WD action in this vehicle is NOT FULLY DISENGAGING…For whatever reasons…These reasons, as I am learning are that sometimes Jeep Liberty owners say that they find that during a xfer case fluid change or check…THEY FIND THE XFER CASE DRY…EMPTY OF LUBE… If this is the case I can understand why I am hearing this CLUNK sound intermittently
Do ANY OF YOU GUYS have any experience with the Jeep Liberty? Have you ever heard of this before? I am a VERY experienced wrench myself so if you have detailed technical information…let it rip… I can handle it.
I think what I am looking for from experienced mechanics is as follows:
- Do you have any experience with Jeep Liberty 4WD?
2, Do the front and rear driveshafts rotate at different RPMS during a turn (As I believe that they must temporarily)
- Have you heard of this “Clunking” issue from other Jeep owners or personal exp.? (the internet seems rather full of this issue) (Still looking for a solution)
Just need some info and tech advice and hoping some of you are familiar with the Jeep Liberty.