Thumping noise Options

[lagos]

Im getting a thumping noise on deceleration only. It sounds very similar to the noise you would hear if you had a flat tire. It is mostly noticeable where decelerating in 3rd gear, right around 2,000 rpm. Its hard to pinpoint if its coming from the left or the right side... kind of sounds like the clutch/trans right in the center of the front of the car.
Anyone deal with something similar to this?

My original diagnosis was that my axle that had been leaking grease was the cause of the noise, but I swapped the axle out for a brand new one (needed to be done sooner or later anyway). but the thumping persists.

Any ideas?

[95celgt]

ok just checked, its completely inaccessable from the engine bay though, i have the stock air box/fuel filter/charcoal cansister in the way, so i turned the steering wheel all the way to the left...

1. Has almost unexistent play pushing/pulling the axle into and out of the transmission, i think the LITTLE click noise it makes is the c-clip holding the axle in the differential.....

2. As a substitution to the method you wanted performed i pushed/smacked the axle upwards away from the ground and i noticed there is some small play and a noise that i can only describe it as a loud sqeeek...hurts the teeth lol.