Having an issue with my steering on my 98' gt.

I replaced my rack about 4 months ago.
I hit a bump on an "on ramp" and heard some metal hit the ground steering becomes complete garbage shaky and sticky almost like sand got in my rack and my rpms slightly increase and I could feel a loss of power.

I inspected the whole under-body and rack could not see anything missing or broke also checked power steering fluid all good no leaks.

my question is, would a bad power steering pump cause these issues? and is it unusual for a pump to stop functioning without whining?

thanks.