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Old 12-02-2013, 09:32 PM
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2000 Grand Cherokee no four wheel drive...

I have a 2000 Grand Cherokee limited 4.7 litre engine. It has 4 alltime mode and 4 low. When I put it in four all time, I only get the back to wheels driving, discovered this last week when I got stuck in the snow. People helping me pushing it out said my front wheels never engaged. Back wheels spin like a son of a B.... I am also getting a grinding noise from under the gear selector where you put in into drive neutral etc. It sounds like a grinding noise going with the speed of the suv. It only does it when under 20 km per hour. So when I am coming to a stop it grinds for the last few yards. The only other time it makes this noise is when you go over a pretty big bump with the front end, then it sounds like it rubs till the suv comes back up from the bump.
Another thing I just found out, the four wheel drive works in four low....what gives.....HELP..this is my first jeep.

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Old 12-03-2013, 03:35 AM
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Re: 2000 Grand Cherokee no four wheel drive...

Welcome to the garage.
Your jeep is probably quadra drive or quadra trac II, isn't it? These jeeps have a NV 247 T-case.
There is a progressive coupling inside the T-case, which should progressively transfer the torque to the front wheels when there is a speed difference between the front and rear propeller shafts. First check the fluid level in the T-case. If ok, then most probably the progressive coupling is shot. Putting the jeep in 4Lo will directly connect the front propeller shaft with the rear shaft and the progressive coupling is bypassed.
I would drain the fluid from the T-case and check for metal flakes.
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Old 12-03-2013, 10:46 AM
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Re: 2000 Grand Cherokee no four wheel drive...

Thank you for that Is this expensive to fix cause I do not have a garage to do it in. Do you know a ball park figure for the repair if it is the coupler which by the sounds of it it probably is.
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Old 12-03-2013, 10:49 AM
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Re: 2000 Grand Cherokee no four wheel drive...

sorry another question...should I even drive it...or am I making it worse every time I drive it...thank you again, you seem to be an expert this unfortunately is my first jeep and so far I am not liking the expensive repairs.

it only has 160,000 on it
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Old 12-03-2013, 12:12 PM
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Re: 2000 Grand Cherokee no four wheel drive...

Grinding noises is not a good sign, so you most probably will make things worse by continuing driving it. On the other hand you most probably better get a used T-case from a junkyard or so then doing a repair to your T-case. You could also choose to put a NV242, which also can select 4x2, but then you will need an other T-case shifter assy and different propeller shaft. Cheapest would be a.junkyard NV247, but you never know how the progressive coupling will be in there.
But did you check the T-case fluid level and take a sample of the fluid after some driving?
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Old 12-03-2013, 12:36 PM
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Re: 2000 Grand Cherokee no four wheel drive...

unfortunately the guy I bought it off changed the fluid in both back and front t cases 1 week before I bought it. I have been driving it for 3 weeks now...so would metal filings show up that quick.....if so I will check.
Is this normal for a jeep with only 160,000 on it....
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Old 12-03-2013, 06:45 PM
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Re: 2000 Grand Cherokee no four wheel drive...

There is only 1 T-case, its the central gearbox where the rear propeller shaft and front propeller shaft come out. Its bolted directly aft of the transmission. The ones you are talking about are the front and rear differentials.
I would drive a bit first, so that the fluid and eventual metal is mixed well and then take a small sample from the T-case fluid first. Normally removing the fill plug (the upper) is enough for some fluid to come out. If nothing comes out, it could be a sign of a too low level.
You could also check the front and rear diff fluid for metal by removing the plug. The differentials don't have a drain plug and can only be drained by removing the whole cover. The plugs in there are the fill plugs.
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Old 12-05-2013, 05:11 PM
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Thank you!! You were right, my mechanic is replacing the transfer case today. It's out of a reck, costing me $500. But that's installed. Plus one year guarantee on the transfer case.
Mechanic said it wasn't full and it was the wrong oil, so that made it fail.
Thank you again!!! You were totally right!!
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Old 12-05-2013, 08:22 PM
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Re: 2000 Grand Cherokee no four wheel drive...

Good, i hope this will solve your problem. Since it seems that the previous owner didnīt took care of the jeep that good (low and wrong T-case fluid), i would change all other fluids as well, just to be on the safe side.
The NV 247 T-case needs special mopar fluid, which is Mobil 424. Take care that this fluid is used and not ATF+4. (Mobil 424 is almost colorless, while ATF+4 is red).
An other thing to watch for is to not have a large difference in tire wear between the front and rear wheels (and especially no different diameter tires). A large difference will cause a different rotational speed between front and rear propeller shafts at all times and could partly engage the progressive coupling, causing it to wear prematurely.
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