1997 Cadillac Northstar 4.6L Remove Water Pump

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The mechanical water pump on the front of the 4.6-liter engine found in some models of 1997 Cadillacs circulates coolant through the engine block and radiator. If the water pump fails, then the coolant has no way to circulate, and it won't do its job. This could lead to an overheated engine, which could eventually cause the motor to crack. If you notice the engine's temperature start to rise, then you can remove the water pump to have it tested or to replace it.

Tools Used[edit]

Drain pan
3/8-inch ratchet and socket set
3/8-inch breaker bar

Remove the Water Pump[edit]

  • Set a drain pan by the petcock on the base of the radiator. Open that petcock by hand, allowing the coolant in the radiator and engine to spill into the pan.
  • Unbolt the air-cleaner assembly from the engine with the 3/8-inch ratchet and socket. Move the air-cleaner components out of the engine compartment so you have room to work.
  • Locate the tensioner on the front of the engine, which is on the passenger side of the block. Turn this tensioner clockwise with the 3/8-inch breaker bar, then pull the belt off of the water pump pulley.
  • Unbolt the water pump pulley from the engine using the 3/8-inch ratchet and socket. Unbolt the water pump from the engine with the 3/8-inch ratchet and socket and then pull it away from the engine.