gear noise from under my 98 ZJ 5.9 L.
I am getting a loud noise coming from under my ZJ. I have the 5.9 L It is a 1998. When going down the road I can hear the noise. the sound increases tone with speed. It sounds like a speedometer gear but coming from the front of the trasmission or transfer case. When I shift from drive to neutral going down the road the sound stops about 2 secound after going into Neutral. Coasting along there is no noise until I shift back into drive. It happens in all gears. If I shift into 4Lo and drive for a bit and then shift back into 4Hi the sound goes away for a while. For that reason I belive the noise is coming from the transfer case. Does anyone know of a prob. with it. I have the NV249 transfer case. I had the fluid replaced at a lube center and they put ATF fluid in there. The noise started soon after. I found out that the transfer is supposed to ATF+4. I took it back to the lube center and they drained it and put the right fluid back in. I dont know if this could have caused a prob. once they changed the fluid it seemed to help but the noise is back and constant now. I have 86,000 miles on the jeep. Any help would be great. Thanks