1991 Ford Taurus Repair the Water Pump
The water pump is essential in keeping your 1991 Ford Taurus' engine cool. The water pump is responsible for moving coolant through the engine, but also undergoes normal wear and tear, which can cause it to stop functioning properly. Signs of a malfunctioning water pump are leaking coolant and a rumbling noise that emanates from the vicinity of the radiator -- if you notice these symptoms, it is time to change the pump. You can save time and money by replacing your vehicle's water pump in your own garage.
 Tools Used
 Repair the Water Pump
- Lift the hood of the car and use a socket wrench to disconnect the ground cable from the battery's negative terminal.
- Place a drip pan underneath the radiator and remove the plug at the bottom of the radiator to remove all of the coolant into the drip pan. Replace the plug after you have removed all of the coolant.
- Locate the water pump and disconnect the two hoses that are attached to it -- these are the heater and radiator hoses. To remove the hoses, use a screwdriver to remove the screws that secure them to the water pump.
- Locate the water pump pulley and the drive belt, which is attached to the pulley. Remove the drive belt from the pulley by rotating the pulley's tensioner -- use a socket wrench to turn the tensioner in a counter-clockwise direction until the drive belt is loose around the water pump pulley. When you notice this, pull the drive off of the pulley and set it aside.
- Use a socket wrench to remove the bolts that hold the water pump in place. Pull the pump away from the front of the engine after removing the bolts. With the old water pump removed, insert the new pump in its place and secure it to the engine with the bolts you previously removed.
- Replace the drive belt on the water pump pulley and use a socket wrench to rotate the pulley's tensioner in a clockwise direction until the drive belt is taut over the water pump pulley.
- Re-connect the heater and radiator hoses to the new water pump and use a screwdriver to tighten the screws that secure both to the water pump. Replenish the radiator's supply of coolant and then re-connect the ground cable to the battery's negative terminal.
 Tips & Warnings
- The water pump is attached to the engine with a gasket, so you must clean off the area where the old water pump was in preparation for the new pump. You can remove the remnants of the old gasket using a scraper.
- Make sure to purchase a new gasket with your new water pump, both of which can be purchased at a local auto parts store.