For 1990-2009 cars only
- Rotate the water pump shaft. The shaft and the fan hub should turn straight and smoothly. If the hub wobbles or the shaft is noisy or feels "lumpy" when turned, replace the water pump.
- Inspect the water crossover for signs of leakage. If coolant leakage is evident, inspect and replace the O-ring seal in the crossover housing.
- Examine the water pump shaft on the pulley side of the pump. If coolant leakage is evident, replace the water pump.
Notice: Do not immerse the water pump in solvent. The solvent may enter the water pump's permanently lubricated bearings and cause premature bearing failure.
