When initially rolling from a stop, forward or reverse, I notice a clicking/popping noise which appears to come from the rear of the car. I looked underneath the vehicle at the U-joints, drive shaft, etc. - all appears tight and very clean. Also, a check of wheel bearing play, results in none for the driver's side rear, and a small amount in the passenger side rear. The car has 19k miles on it, and was not driven but 1600 miles in the last 11 years.
Once you get rolling more than a few mph, the Z runs smooth and quiet as as if on rails.
I found
this post in the C-4 section, and it sounds very similar to my issue... claiming it's rust on the spindle shafts.
Anyone had this issue or have other thoughts?