Well, the Jeep has been running great. Daytona Beach winter is such a great time to be driving the YJ and I have been doing that quite a bit. I just love driving this thing as much as I can.
So a few weeks back, I was driving and the Jeep just felt different to me going down the road. I figured out that the front CAD was engaged even though I had the transfer case in 2 HIGH. To get it to disengage the front axle, I wound up removing the vac connection and turning it 180*. That immediately disengaged the front axle so I knew I had a vac issue. I realized that my 4x4 light in the dash wasn't working properly, so I figured that out and got it working so that was a big help lol.
I figured I had either an issue with one of the vac lines leaking or the vac switch on the transfer case was the problem. Upon removing the vac switch on the transfer case, I figured out that was my issue. The ball on the switch was very sticky and didn't move much. When the replacement arrived, it was very obvious that the old switch was the issue.


You can see the difference in how far the ball sits out on the new switch vs the 30 year old OEM switch. Tossed in the new one and the 4WD system works as it should again. Definitely helps having the 4x4 light working properly too. Always nice when it's the least expensive and least labor intensive fix.
So a few weeks back, I was driving and the Jeep just felt different to me going down the road. I figured out that the front CAD was engaged even though I had the transfer case in 2 HIGH. To get it to disengage the front axle, I wound up removing the vac connection and turning it 180*. That immediately disengaged the front axle so I knew I had a vac issue. I realized that my 4x4 light in the dash wasn't working properly, so I figured that out and got it working so that was a big help lol.
I figured I had either an issue with one of the vac lines leaking or the vac switch on the transfer case was the problem. Upon removing the vac switch on the transfer case, I figured out that was my issue. The ball on the switch was very sticky and didn't move much. When the replacement arrived, it was very obvious that the old switch was the issue.


You can see the difference in how far the ball sits out on the new switch vs the 30 year old OEM switch. Tossed in the new one and the 4WD system works as it should again. Definitely helps having the 4x4 light working properly too. Always nice when it's the least expensive and least labor intensive fix.