hip problem on elliptical trainer

becnaffine

I have this problem whenever I use the elliptical trainer. My left hips goes stiff and I lose the range of motion due to it feeling uncomfortable. It doesn't hurt but it feels like if I push it to the full range of motion that it will pop out or hurt. When I get off I have to walk slowly and carefully and it usually starts to feel normal within a couple of minutes.

Anyone have this problem or know what may be causing it?