hi all i have a 2.4 1995 van, when i bought it the power steering was working off and on, i had a second hand pump fitted which worked for a week then stopped, so i bought a new pump and had that fitted same thing again, stopped working after a week. i have changed the fluid from red to green but still the same. my mechanic recommends that i change the rack what do u guys think? i dont want to keep throwing money away if i can help it.