How to Install a Water Pump in a Pontiac Grand Prix

Overheating can happen fast in a Pontiac Grand Prix. For commuters, this can be a frustrating problem. You can prevent one of the major causes of engine overheating with regular leak inspections. A leaking water pump can cause overheating and major engine damage, as well. Replace the pump at the first sign of failure.

Instructions

Removing the Old Pump

1

Disconnect the negative battery cable by unscrewing the clamp that connects the cable to the battery with a screwdriver. Pull the cable away from the battery.

2

Use the jack to raise the Pontiac Grand Prix off the ground enough to work underneath. Place jack stands underneath to secure the car.

3

Twist off the radiator cap slowly. Do the same with the drain plug located underneath the radiator. Put a container under the opening to catch the coolant. Wipe up any spilled coolant to avoid slippage.

4

Use an adjustable wrench to undo the bolts to the accessory drive belt guard. Loosen the bolts on the water pump pulley and then remove the accessory drive belt. Remove the water pump pulley and undo the four bolts securing the water pump to the Pontiac Grand Prix's engine.

5

Clean off the mounting area after removing the pump, using a shop rag. Inspect for cracks.

Installing the New Water Pump

6

Inspect the new Pontiac Grand Prix water pump. It should be identical to the old pump, clean and free of any metal splinters.

7

Apply a bead of high temperature automotive sealant to the new water pump, engine block and the new gasket. Position the new gasket onto the water pump.

8

Position the locator, which sticks out of the surface where the water pump sits on the mounting area, vertical to the floor. Do this before tightening the bolts on the new pump to achieve a tight seal.

9

Hold the water pump in place as you secure it with five new bolts. Tighten them to 81 inch pounds torque in any order. Install the rest of the parts in the order you took them off the Pontiac Grand Prix. When installing the pulley bolts, use 18 foot pounds of torque on each bolt.

10

Insert the drain plug into the bottom of the radiator. Refill the radiator with coolant, as specified in your owner's manual. Replace the radiator's cap.

11

Remove the jack stands and lower the jack. Reconnect and tighten the negative battery cable to the post with the screwdriver. Start the Pontiac Grand Prix's engine and check for leaks. Then, close the hood and clean up any spilled coolant.

12

Dispose of the drained coolant. The old radiator fluid is a hazardous material. You may need to contact your local sanitation department for disposal options.