I dont' know if this question should be in this forum or in the FAQ forum. I have a 2005 Liberty Limited CRD. I has the Selec-Trac system. Up until yesterday, I had never had it out of 2WD, but I had been told that I needed to at least occasionally shift it into the 4WD mode to keep everything lubricated. Yesterday was a rainy and supposed to be icy day, so the manual said that I could run it in 4WD Full on any surface, including dry hard roads. I thought I would try it out. So I was parked in the driveway, put the transmission in neutral, shifted into 4WD Full, moved the transmission lever back and forth between "D" and "R" like it says in the manual, and backed out. Everything seemed fine - no noises or hesitations. I ran errands all day and then when I got back home, shifted it back into 2WD. After sitting all night, I thought I would try it again today, so I did the same thing I did yesterday, but this time, when I started backing out, there was a very loud "CLUNK". I stopped the car, put it into "D" and went forward a few feet, then back into "R" and backed out again. This time there was no noise and everything seemed fine. Did I do something wrong, or is the "clunk" a normal sound? Thanks.

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Lt. Khaki 2005 Liberty Limited CRD.
I love my Jeep diesel!

was the clunk the first time you drove after shifting from 4wd back to 2wd?

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2005 CRD Limited
added Mopar plates, snow, mud
Detours backbone (w/lp8500)
Skink super sliders

Happens all of the time. It didn't engage fully and so you got that loud clunk noise. Leave it in 4 Full when you park. Don't switch when parked then switch it back again. You can stay 4 Full all the time.

Make sure the wheel is straight when shifting from 2-4 or 4-2 wd. Works better if you are driving. All you do is pull the lever to 4 Full-time and down on the lever until it is 2WD (4-Full light goes out and not showing 4 Part time either).

In the winter, not that Texas has to worry about it very often, but it would be best to leave it in 4 Full when parking and leaving it. You may find that you need it immediately in the morning.

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New KJ Gear - Desert Armor Flak

2004 Renegade Light Khaki - 4" JBA Lift - Rock Lizard Products: Komodo Dragon Rear Bumper, Prototype Winch-mount Front Bumper, Super Skink Sliders - All J's Super Tranny Skid II - 31" Firestone Destination AT's on Moab wheels - Cobra 75W CB w/ stock Antenna mod

[b]Retired, US Military

Thank you both! I was afraid I had broken something.

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Lt. Khaki 2005 Liberty Limited CRD.
I love my Jeep diesel!