I had my the axles replaced on my 1993 GXE Maxima because both outer CV boots were completely torn open for an unknown period of time. I never recalled hearing any noises when turning, but I noticed two months ago my highway fuel economy tanked. I was used to getting from
28 to 30 mpg, but lately it dropped to the 22 - 24 mpg range. It seemed that, as time passed, I would have to apply more and more gas to achieve the same acceleration.
Anyway, a mechanic changed the axles at $90 each and charged $144 labor. Although the labor seemed a little high, it's a far cry from the $500 someone qouted for axle replacements.
Anyway, the car steering is smoother, and the acceleration feels smoother and sounds better. I'll have to keep my fingers crossed to see if the fuel economy improves. I wonder, though, if there will be any lasting effects to the engine and transmission.