DrCharles
Full Access Member
We've had some snow, ice, and rain recently, and it's about 2.5 miles on dirt & gravel (now mud) roads to get to pavement, so I locked the front hubs on my '93 IDI but stayed in 2H.
I got to the highway without using 4WD and didn't bother to get out and unlock them. Transfer case stayed in 2H - I do know not to engage 4WD on dry pavement
But above 35-40 mph there is a pronounced "rumble" and low-amplitude vibration from the front axle area, which goes away with the hubs unlocked. Is this a sign of bad U-joints? Or am I just not supposed to leave the hubs locked at highway speeds?
thanks
Charles
I got to the highway without using 4WD and didn't bother to get out and unlock them. Transfer case stayed in 2H - I do know not to engage 4WD on dry pavement
But above 35-40 mph there is a pronounced "rumble" and low-amplitude vibration from the front axle area, which goes away with the hubs unlocked. Is this a sign of bad U-joints? Or am I just not supposed to leave the hubs locked at highway speeds?
thanks
Charles