93 Ranger clunks/slips while accelerating in 4wd
I did a search and couldn't find a specific answer to this question so sorry if this has already been answered.
Anyway... what's happening is when 4x4 is engaged I get a random clunking sound coming from the front of the truck while accelerating. It feels like something is slipping. It will happen multiple times as I accelerate and as far as I can tell it isn't doing this while the truck shifts. I tested it climbing up a fairly steep rock surface which made the clunk FAR worse.
I've heard the hubs might need to be replaced but could it just be a vacuum leak or something else? The 4x4 and Ranger is new to me so i'm not very knowledgeable yet. I have it booked in at my mechanic next week but I'm hoping to have some idea of what it could be first.
Truck is a 93 Ranger XLT, 3.0, Automatic, Auto lock hubs
Thanks for your help!
Mike



