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My Jeep won't go into 4 wheel drive

Tiny
CHRIS GODMAN
  • MEMBER
  • 1994 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • MANUAL
My Jeep won't go into 4 wheel drive. Can you help me?
Sunday, January 2nd, 2011 AT 7:07 PM

13 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Check the linkage to the transfer case. If it is working, check actuator on front axle.
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Wednesday, March 16th, 2011 AT 2:49 PM
Tiny
OLDTOPCAT
  • MEMBER
  • 1 POST
  • 1988 JEEP WRANGLER
Transmission problem
1988 Jeep Wrangler 6 cyl Four Wheel Drive Manual

The jeep will not go into 4 wheel drive although the lever is in the correct position. Is there a vacuume control on it?
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Tuesday, April 23rd, 2019 AT 6:38 PM (Merged)
Tiny
MECHCURT
  • MEMBER
  • 184 POSTS
There is a pot down on the backside of the axle on the passenger side. These are prone to going bad. They are vaccum powered. Check to make sure you have vaccum at this location. Curt
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Tuesday, April 23rd, 2019 AT 6:38 PM (Merged)
Tiny
RLLITTLE
  • MEMBER
  • 1 POST
  • 1987 JEEP WRANGLER
Drive Train Axles Bearings problem
1987 Jeep Wrangler 6 cyl Four Wheel Drive Automatic 155k miles

Hi, my jeep won't go into 4wd when I shift the transfer case into 4HI. The indicator light on the dash doesn't light up and I don't feel it shift into 4wd.
I recently put a 3 1/2" suspension lift and 33" tires on it, could that have an effect?
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
MECHCURT
  • MEMBER
  • 184 POSTS
Lifts are what I do. Anytime you put a lift on you change where all the linkages move, specially one that is over three in's. What I do is loosen the bolt on the linkage for the transfer case and while in 4H. Then slide the linkage until it goes into four hi on the case. Tighten the bold and then you have to test to make sure it works. You sometimes have to do this a few times to get it all where it belongs. Hope this helps Curt
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
DFORTE
  • MEMBER
  • 1 POST
  • 1995 JEEP WRANGLER
  • 4 CYL
  • 4WD
  • MANUAL
  • 125,000 MILES
I can shift the transfer case to 4H and 4Lo but the
front wheels are not driving?
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
MECHCURT
  • MEMBER
  • 184 POSTS
On the front axle there is a vacuum activated pot and an electrical connection on the passenger side of the axle. Check for a good connection of both, these sometimes come undone. If all tests ok then it will probably be the actuater. Also on a 95 this actuator may be totally wlectric, I get the years mix up. That would be where to start looking. Hope this helps Curt
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
RUPERTTT7
  • MEMBER
  • 2 POSTS
  • 1991 JEEP WRANGLER
Other Category problem
1991 Jeep Wrangler V6 Four Wheel Drive Manual 192000 miles

my 4x4 isnt working and ive checked all the vaccum lines and they are perfect. The 4x4 light goes on and off. The drive shaft comein from the transfer case is engaged but seems like it doesnt have enough to move the front wheels. Is it because the transfer case is low on fluid?If so how do I check the fluid in it?Where is it on the transffer case
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Check the seals in the hubs, if they are no good they will suck air and not create sufficient vaccum to lock the hubs.
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
RUPERTTT7
  • MEMBER
  • 2 POSTS
If all the seals are good what else could be causing this?
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Forgot how to tell you how to check the fluid! First on the transfer case you should see two plugs, the upper one is the fill and the fluid should be about that high, the bottom one is the drain.

If the vaccum lines are good, then check to see that the transfer case is engaging and turning the shaft, just not turning hte wheels if so check the inside for sheered off metal shavings.
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 1989 JEEP WRANGLER
  • 109,000 MILES
Will not go into four wheel drive
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
Explain in full----everything!!!

Stick won't move?

Your evil buddy took off the knob off and tried a 2 foot long cheater bar?

Stick works----jeep won't go at all?

Had jeep for long time?

Was working?---never worked?

Tumbled down cliff while rock crawling?

Engine?

Modifications?

Do you do your maintenance as outlined in a manual?

https://www.2carpros.com/questions/2007-ford-taurus-tune-up

Are you capable?

Sorta know the kinda info i'm after???

Normally i respond in volumes, i just ask you sorta, at minimum answer back, with a few lines!

I will aid you all i can---many of my jeep cj posts are over 100 responses long--as we sorta just keep on fixin' other stuff

The medic
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Tuesday, April 23rd, 2019 AT 6:39 PM (Merged)

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