Don't think my 4wd is working right?????? - Jeep Wrangler Forum
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Old 12-28-2008, 08:38 PM   #1
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Don't think my 4wd is working right??????

Okay, when I got the jeep, the kid told me the 4wd didn't work. He said the shift linkage to the t-case came loose. Checked it, it looked good, put her in 4wd, and it went right in, so I assumed it worked. I got my wife to move it very slowly so I could look under it to see if the front driveshaft was spinning and it was.......okay, heres where I'm confused.....I have NO 4wd indicator in the dash, when I'm playing in the mud, if I get stuck and have to put it in reverse, it doesn't look like it's slinging up any mud from the front wheels either. I just about got stuck a few minutes ago in the woods on a very muddy, slippery, trenched up hill. I was out there trying to get up this hill for like 10 minutes...lol. I think something funny is going on. How hard is it to change it to that cable thing you pull instead of the vaccuum operated stuff??? Seems like the 4wd would have to work if it were controlled by a cable, right?? or atleast better than it does with vaccuum......help me out guys, I don't wanna have to walk home in the mud...lol. Thanks in advance.

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Old 12-28-2008, 08:41 PM   #2
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Oh yeah, and it won't even climb up small stuff either. I tried to climb up a rock in the woods that was maybe at a 70 degree angle, maybe 3 feet tall to take a picture of the jeep and NO-GO...lol. Somethings up with this thing. My buddy had a 4cyl jeep just like the one I have(years ago), but it would climb a wall...???? What gives?

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Old 12-29-2008, 11:48 AM   #3
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UPDATE!!!!!


I went outside and messed around with the vacuum lines some more and found the original red one on the intake manifold. It was running inside the cab??? I unhooked it completely. Then, I got a long piece of vacuum line I had laying around and hooked it from the intake manifold port where the red line was to the t fitting on the yellow line (which had a cap on it). The 4wd light in the dash came on and the 4 wheel drive worked beautifully. Only problem is 4wd light in the dash stays on in 2wd. Is it even switching back to 2wd or do I need to manually switch the vacuum hoses around anytime I want to put it in 4wd? Bare with me guys, I'm getting it......almost...lol.
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Old 12-29-2008, 05:53 PM   #4
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this light staying on is common, it has to do with the vacuum lines. Not sure, but this is just another jeep hiccup.
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Old 12-29-2008, 07:45 PM   #5
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Cool, thanks man. I think I'm getting closer to having it work right now.
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Old 12-29-2008, 07:56 PM   #6
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i think someone on here has listed the vac diagram search for it and youll be golden if you really want to do the cable thing i would think it wouldnt take much longer than an hour
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Old 12-29-2008, 11:49 PM   #7
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I'm just gonna drive it with the front locked but the transfercase in 2wd. Just went on a trail ride and it did great. I put it in 4lo and I went off a part of the trail and made my own trail and it did awesome. 2wd seems to work fine also. WAY more fun than 2wdrivin....lol.

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