2000 Other Plymouth Models Rack and Pinion

How can you tell if the Rack and Pinion is going or if it is your power steering pump? Hubby and I are arguing about this. I had a friend look at the car because I thought it was the power steering pump and he said it was the r&p. I told hubby and hubby says that doesn't make sense because the r&p has nothing to do with the steering of the car. Now I know he is full of crap but what can I tell him to get him to believe me? The Power steering fluid is coming out by the driver side wheel and goes through like there is nothing stopping it.