What year did they make the YJ Jeep?
The Jeep Wrangler YJ was the first generation of Jeep Wrangler four-wheel drive small off-road vehicles, rebadging and succeeding Jeep’s CJ series, produced from 1944 to 1986. The first Wrangler (internally “YJ”) was launched in 1986 and ran through 1995.
Where is the vacuum shift motor located on a wrangler?
The right side axle shaft is a two-piece design, split at the vacuum shift motor. So, you do need the front axle disconnect mechanism to work for 2WD and 4WD modes. There’s a shift fork and vacuum motor assembly mounted on the front axle (right side).
What causes Jeep Wrangler 4 wheel drive to not engage?
Jeep 4 Wheel Drive not engaging 1 Failed Actuator. The actuator is a component found mostly on modern four-wheel drives and is designed to electronically engage 4 wheel drive. 2 Vacuum Hose Damage. 3 Vacuum Hoses Unhooked or ripped off. 4 Faulty Vacuum Switch. …
How does a YJ Wrangler transfer case work?
Regarding your YJ Wrangler transfer case, the shift lever moves the shift positions within the transfer case, this is not vacuum actuated. The vacuum is to the front axle disconnect mechanism. This shift mechanism splits the right side axle shaft power flow when the transfer case is in 2WD mode.
Why is my Jeep Wrangler not engaging 4H?
If the lever feels more loose than normal or when you shift the lever back the Jeep fails to engage 4H or 4Lo. If this happens then you need to investigate immediately by crawling underneath the Jeep and have a look at this transfer case linkage.
How does a Jeep Wrangler YJ shift into 4WD?
YJ’s are different from their CJ predecessor, as well as the new ’97-’02 TJ Wranglers and 91 and up XJ’s, by having a two-piece axle shaft on the passenger side. Shifting into 4wd is done through the console shifter sending an impulse to the front motor via the vacuum lines.
The right side axle shaft is a two-piece design, split at the vacuum shift motor. So, you do need the front axle disconnect mechanism to work for 2WD and 4WD modes. There’s a shift fork and vacuum motor assembly mounted on the front axle (right side).
How do you unplug a shift motor on a Jeep Wrangler?
The vacuum lines that run to the top of the shift motor will need to be unplugged. Simply pull them off of the tips that stick out of the motor. Once disconnected, carefully remove the outer bolts of the motor housing. Keep in mind that gear oil will spill out of the housing once it is loosened and removed.
Jeep 4 Wheel Drive not engaging 1 Failed Actuator. The actuator is a component found mostly on modern four-wheel drives and is designed to electronically engage 4 wheel drive. 2 Vacuum Hose Damage. 3 Vacuum Hoses Unhooked or ripped off. 4 Faulty Vacuum Switch.