power steering problems

Hi there,

I've been noticing slight binding or resistance in my steering recently on my 02 overland. It happens intermittenly when I"m reversing into a parking spot or manuevering in a parking lot. It's fine on normal roads. Don't really notice anything wrong. It also makes a honking sound when i turn the wheel to the right. But that symptom happens very rare. Would it be the pump failing or do I just need to service the power steering...say flushing and changing the fluids? Please help, Thanks Rob!