I recently bought my first Jeep, a 95 Wrangler (2.5L, 5 speed) and the 4 wheel drive is not engaging. The light on the dash turns on when in 4hi or 4lo, and I can easily get the shifter from from 2WD to 4hi and 4lo, but I can feel that it is not engaging. I jacked it up to see if the front tires are spinning, and 9/10 times only the back tires spin (I did get the front to spin 1 or 2 times). Also, there is a very loud grinding noise coming from the transfer case occasionally when in 4hi and 4lo (mostly when I was on the beach, not if I try it on the road). I checked the transfer case oil and it was almost empty so I filled it up, but it is still not engaging. I don't know where to look for the problem. I haven't found any other threads where the indicator on the dash comes on & the 4 wheel drive is very intermittent like mine- what could this mean?