Hey y'all. New to the thread. Appreciate any help. I have a 2001 durango 4.7 AWD. The problem is I hear a grinding/crunchin noise from the front end while I'm accelerating. At a coast it is fine. It happens in awd and all 4wd selections. I just replaced my wheel bearings which helped due to the fact that they were bad as well. It started after I had to go on an off road adventure for a job site. Deep muddy rutts and water holes. That's what shot the wheel bearings. I've lifted the front end and left it in awd set the e brake and put it into gear. It made the crunching noise as the front wheel started to accelerate and quoted once I reached idle speed. When I hit the breaks it would crunch again and then again when brake was released. I lowered it to drive 1 mile to parts store to get another oil catch pan and silicone. No noise whatsoever after about 300ft of driving. Did great there an back. Got it back in air now and I can't get it to make noise. This had happened before. It seems to be worse with cold weather. Cause today is warmer and now no problems. Also the front diff is full. But It sou da like that's where the noise is coming from. At this point I have no idea. Please help! Thanks everyone!