can you gauys give me and idea of what the symptoms of a bad pump and a bad rack. 10% of the time the steering goes a little hard turning to the left. then most of the time it goes easy. its only when both TIRES are on the ground it turns hard to the left. even if i jack it u and put all the pressure on the drivers side that turns hard it doesnt do it AT ALL. the back of my pump is all wet. no leaks under the car. Please symptoms of both would help.

2000 Grand Prix SE
140,000 miles
3.1 motor.