Actually I'm pretty sure that no vehicles , let alone broncos came with greaseable u-joints, I could be wrong but I can say for sure the 91 Ranger did not come with greasable u-joints.87EBBronco said:From the factory ALL Bonnco's had greaseable ujoints on the driveshafts. If there isn't a zirk fitting on the ujoint it means 1 of 2 things, either the ujoint has been replaced with a non-serviceable ujoint or the zirk has been broken off. Like waltman said if you can't grease em, replace em.
Mine went from EXTREMELY fast to not at all and everywhere in between before it blew out. Mine happened when I was rolling slowly, and accelrating...Konham said:its not a wheel bearing, its to fast of a sound, also it doesnt happen when im just rolling, its when im eccelerating