Hey guys and gals- I have a 88 YJ and noticed a loud "gear" noise coming from it. When you accelerate- nothing- sounds fine. But when you let off the accelerator- a loud humming comes up for a second then goes away?
Now I thought this was odd- so I decided to add fluid to the transfer case- took almost 2 solid bottles of Lucas. Then decided to add oil to the crankcase, rear and front axels.
The noise is not as bad-- but is still there? Is my transfer case about to out?