2013 Sport MT 93k miles, just replaced the passenger cv axle. Old one had too much play in it. On the drive home, I noticed that there's a humming/vibration at 3000-3100ish rpm when driving regardless of what gear I'm in. Doesn't happen sitting still or coasting in neutral.

Anything I should double check? Or is it just a poorly manufactured replacement part?

I didn't get the car aligned after replacement. I'm changing tie rod ends and sway bar links tomorrow, will get it aligned then.

 

Most cheap aftermarket axles will have this issue. They normally toss them together with cheap labor while some companies even use used or rebuilt parts to save money on the overall costs. You are much better off spending the extra cash on OEM axles that are done right from the start from what I have learned.

 

I had that before. If it was your axle it would sound constant and not be related to RPMs.

in my case it was a loose exhaust manifold heat shield that would rattle against the manifold.