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Unread 11-01-2010, 02:47 PM   #1
leichte
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Easy 4 Wheel Drive Test

I have a 1987 Laredo and have doubts that the 4WD is working. Since I don't have a mud pit or off-road area, is there an easy way to test if 4WD is working?

Many thanks!

Clarke

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Unread 11-01-2010, 03:08 PM   #2
WhiteMtnJeep
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Get somewhere of the pavement, put it in 4wd, and give it some gas. You'll know for sure.
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Unread 11-01-2010, 03:09 PM   #3
Green4dr
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pull it to 4hi then try to make a tight turn going slow. if you hear binding or feel it then your 4 is working. o
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Unread 11-01-2010, 03:12 PM   #4
gonejeepin04220
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if its an auto. (or good with a stick) POWERBRAKE IT!! put it in "4wd" . put it in drive, push down firmly on the brake pedal. and at the same time push the gas pedal..if you spin the tires (rear) and your sitting still then your not in 4wd. if you were in 4wd it would move without a problem. thats the easiest thing i can think off. or jack all four tires off the ground and put it in 4by and then drive and see if the front tires are spinning
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Unread 11-01-2010, 03:30 PM   #5
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Put your back tires on blocks and put it in 4...if your Jeep comes off then your front engages! Dont break something to test out 4x4, just put the back up with teeny bottle jacks that your jeeps came with and drive off them. They wont hit your Jeep because they will fall over- everything is safe!!!
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Unread 11-01-2010, 04:35 PM   #6
cumminsjeep24
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put it up on jack stands, put it in 4wd and let off the brake
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Unread 11-01-2010, 04:45 PM   #7
1990JEEPXJ
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the last two seem unsafe to me.

x2 on just finding some dirt or gravel and just punch it in 4WD, youll know for sure. or if there is no dirt in the area, just remove the rear driveshaft(youll lose a little fluid from the t-case), and try to drive in 4WD. then top of the t-case appropriately
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Unread 11-01-2010, 08:35 PM   #8
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the last two seem unsafe to me.
Put it in 4WD, jack up one front wheel and see if you can spin it by hand. If you can, it is not in. This is the only definitive and safe way to do it on a rig without lockers.
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Unread 11-01-2010, 09:22 PM   #9
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that is also a good way. but they way i described is not unsafe in any way. though the way you described is probably best
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Unread 11-01-2010, 10:24 PM   #10
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put in 4wd turn all the way in one direction, then try to lurch forward real quick when turned on full lock, youll know whether or not if its working then.
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Unread 11-02-2010, 07:50 AM   #11
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Put it in 4WD, jack up one front wheel and see if you can spin it by hand. If you can, it is not in. This is the only definitive and safe way to do it on a rig without lockers.
x2 on this. Don't break something just to test it out.,
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Unread 11-02-2010, 07:56 AM   #12
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Hey black mountain isnt from from me, well i move from asheville to hendersonville but still isnt to far away. I know theres dirt roads out there you can tear down to see if the 4x4 works
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Unread 11-02-2010, 09:59 AM   #13
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Originally Posted by Green4dr View Post
pull it to 4hi then try to make a tight turn going slow. if you hear binding or feel it then your 4 is working. o
always a good way to find out
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Unread 11-02-2010, 02:26 PM   #14
jkh
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Disconnect the rear driveshaft and put it into 4hi. If you go anywhere, it works
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Unread 11-02-2010, 03:42 PM   #15
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Disconnect the rear driveshaft and put it into 4hi. If you go anywhere, it works
As it leaks ATF fluid out the back of the tcase. Not a good idea.
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