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My2ndJeep 12-11-2012 09:16 PM

4 Wheel Drive
I know this is vague but I have a 2004 GC. I was slipping all over in the 1st snow of the year, a local mechanic drove it just a bit & said my 4 wheel drive is out. I have what I call "4 all the time" (quadra track/drive not sure). My question is - does anyone know what typically goes out on these? And what a ball park repair cost am I looking at? I know this is vague but with almost 200,000 miles I trying to figure if its worth fixing? No quotes from anyone unless they start taking the wheels off and ...?

Me Fix 12-14-2012 07:44 AM

Re: 4 Wheel Drive
So what is working at this time? The front or the backand are both wheels on the front or back pulling? Have you ever changed the differential fluids and transfer case fluid? That should be done on a regular basis using the proper fluids and additives for the clutches in each part.

Frango100 12-15-2012 08:25 PM

Re: 4 Wheel Drive
The 4x4 for quadra trac or quadra drive is taken care of by the same T-case, the NV247. The progressive coupling inside the T-case will be automatically activated if there is a speed difference between the front and rear propeller shaft, transferring torque to the front wheels. Did you try 4Lo, to see if 4x4 is working then? Did you check the T-case fluid level and color? The progressive coupler could be shot.
The only difference between quadra trac and quadra drive are the varilock differentials (quadra trac has open diffs). They will lock both wheels on the same axle, when a speed difference between those 2 wheels exists. With quadra drive you could (worst case) have 3 wheels spinning free and only one wheel which could transfer all the torque to the ground. With quadra trac or both rear wheels, or both front wheels will have to transfer the torque. If for example 1 rear wheel slips, the other side wheel could stand completely still without any torque transfer.

YJ John 12-16-2012 08:24 AM

Re: 4 Wheel Drive
Morris has a rebuild kit for $580.

Progressive Coupling, Seal & Chain Kit with 247 Transfer Case 5012329AA-K2

Or I also found an exchange for $795 TCE Order rebuilt transfer cases, makes & models: Ford, Chevy, Dodge, Jeep, Hummer

Me Fix 12-16-2012 10:10 AM

Re: 4 Wheel Drive
Worth Fixin' ???? You have to be the one to decide that one. 200,000 miles is not the only measuring stick on any of todays cars. You said you had a mechanic drive your Jeep. Did he do any of the things Frango suggested? Troubleshooting using the suggested information may help you find the problem, come back with a better description of where the problem might be and could save you LOTS of money. YJ John has already suggested a kit if you need it, but do you really need it

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