I have a 2007 ford fusion. It seems that there is a wet spot on the pulley below the power steering pulley. I was wondering if anyone has ever fixed this type of problem on a fusion. It is a 2.3 litre 4 cyl. I tried to see if it was either the thermostat or the water pump. What do you think I should replace. It is very hard to see because the power steering pump is above the thermostat so I can't really see which one is bad. I haven't gotten any type of codes yet. It is a small leak which is getting a little more with time. Any input would be greatly appreciated. Thanks in advance.