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Old 06-15-2010, 12:28 PM   #1
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Best way to check if 4WD works?

My new Jeep seems great so far with the exception of an ever so slight wobble at 55mph-60mph. I will be getting all new tires this weekend to hopefully solve the problem.

Now, as far as the 4wd.. When I pull it up once the light comes on in the dash for temp use. It feels like it drives differently so I assume it works. When I switch to the other 4wd spots the same light stays on, does that mean that my 4wd does not work? Should there be different lights for each of the 3 levels of 4wd?

How often should I use the 4wd to keep it operational or does it matter how frequently it's utilized?

Thanks!

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Old 06-15-2010, 12:30 PM   #2
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There shouldn't be different lights for different levels of 4wd. I have a YJ, so in that I have 4HI and 4LO and the same light stays on when I am in either.

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Old 06-15-2010, 12:31 PM   #3
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Park that front tire on something loose (gravel, dirt) and step on it.. you'll either see it spin, or see the mark it left.
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Old 06-15-2010, 12:44 PM   #4
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I used a patch of grass off the side of the road. Dropped the clutch in 2, then 4hi, then 4lo.
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Old 06-15-2010, 01:30 PM   #5
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Ummm, go to a parking lot and drop her in to 4hi....then make a sharp left turn GOING SLOW. If the jeep is trying to hop around in the front end, STOP, put it back in 2wd, and assume it works.
As far as 4low, you should be able to tell right away since it's a granny's granny gear. RPM'S come way up, but you still move about as fast as a turtle.
DO NOT DRIVE IN 4WHEEL on any smooth pavement any longer than to check what I mentioned above.
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Old 06-15-2010, 01:48 PM   #6
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You can't drive in 4w High? Or 4W low? I thought that it was ok to drive in certain conditions in 4wh?
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Old 06-15-2010, 01:57 PM   #7
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When you are in snow or some place where you cant get traction in 2wd. Correct?
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Old 06-15-2010, 02:01 PM   #8
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4 hi is for any condition where there is the ability to slip and pull at different intervals (wet pavement, snow, ice, dirt, grass, mud etc.) Otherwise.. if the friction is too great (pavement) this puts strain on the drive-train since all the wheels are turning at once, but at slightly different intervals.

Basically.. you want to be able to slip when in 4 wd.

I probably didn't explain that well..
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Old 06-15-2010, 02:06 PM   #9
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I understand it.

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