New Member First Time Posting. I have a 2002 Sahara Wrangler 5 speed that has a "rattle" in the drive train. The Jeep is completely original with 45,000 miles on it. Never been in snow or taken off road. It's probably been in 4wd twice. (wife's summer ride). I own a garage and have experienced mechanics but we can figure this one out. Under load there is no noise. Once you let off the throttle the rattle starts. You can put it in neutral, clutch in or out, engine running or off and it will continue to rattle until you coast to a stop. There is minor play in the front yoke of rear drive shaft. I bought a new yoke and two new u joints from Chrysler. Still does it. I changed front and rear end fluids checking all gears while in there. Still does it. I put it on one of my lifts but it wouldn't do it with no load on the tires. I removed rear drive shaft and drove it and the noise stopped. I don't think by doing that tells me it's the rear end I think it just stopped the transfer of noise through the drive train.
Any ideas would be greatly appreciated from the Jeep Experts. Thanks!!