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How to Replace the Water Pump in Volkswagen Cars

by Contributing Writer; Updated June 12, 2017

In order to keep the engine cool, all vehicles use a coolant circulation system. The coolant transfers the heat away from the engine, flows to the radiator, and allows the radiator to dissipate the heat. But in order to move the fluid around the system, your car needs a properly working water pump. This pump also moves hot coolant into your cabin heating system so you can have a warm air on those cold days.

Under The Hood:

 How to Replace the Water Pump in a VW Jetta

Diesel Engines and 4-Cylinder Gasoline Jetta Engines

Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan. Disconnect the negative battery cable.

Take out the drive belt, the alternator and the timing belt cover.

Disconnect the following hoses from the water pump: the engine hose, heater hose and the lower radiator hoses.

Loosen and remove the water pump bolts, taking note of where you have removed them for installation, as they are various lengths.

Remove the water pump, turning it just slightly to remove it from the engine block. Separate the water pump pulley from the pump.

Clean all the mating surfaces and attach the pulley to the new pump.

Put a good amount of silicone compound onto the seals of the pump and install new o-ring seals. Install the new pump into the engine with a new pump gasket, tightening the bolts to 7 foot pounds (10 Nm).

Tighten the bolts to the pulley to 15 foot pounds (20 Nm) after the belt has been installed and tensioned.

Reattach and reconnect all remaining parts in the order in which they were removed.

Refill the cooling system and reconnect the negative battery cable. Start the engine and check for leaks when it reaches normal operating temperature.

5-Cylinder Jetta Engines

Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan. Disconnect the negative battery cable.

Loosen the three water pump pulley bolts and remove the V-belts and the timing belt with the cover. Take out the water pump bolts and remove the pulley.

Loosen and remove the intermediate shaft drive sprocket bolt. Take the sprocket out of the engine.

Take off the water pump bolts and remove the pump. Clean the gasket surface thoroughly.

Attach the water pump pulley to the new pump and install the new pump with a new o-ring seal. Put plenty of silicone compound onto the o-ring and attach a new pump gasket onto the pump housing when installing.

Attach all the bolts to the water pump to the pump housing by hand, then tighten all the bolts to the 15 foot pounds (20 Nm).

Tighten all the bolts to the pulley to 15 foot pounds (20 Nm) after the belt is installed and tensioned.

Reattach and reconnect all remaining parts in the order in which they were removed.

Refill the cooling system and reconnect the negative battery cable. Start the engine and check for leaks when it reaches normal operating temperature.

Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan. Disconnect the negative battery cable.

Items you will need

  • Drain pan

  • Wrench set

  • Coolant

 How to Replace the Water Pump on a 2000 Jetta 2.0L

Removal

Bring your vehicle to a complete stop. Turn the engine off. Allow the engine to cool to avoid burning yourself. Release the hood latch and raise the hood. Remove the negative battery cable by loosening the clamp from the terminal with a wrench. Move the cable to the side.

Position a drain pan under the radiator at the front of the vehicle. Using pliers, turn the drain plug on the bottom of the radiator counterclockwise. Drain all coolant from the vehicle into the drain pan. After the fluid has stopped draining, close the drain plug by tightening it clockwise.

Locate the thermostat housing and remove it using a ratchet. The thermostat housing is located beneath the water pump housing.

Loosen the bolts on the water pump pulley with a ratchet. Do not remove the bolts.

Remove the cover for the timing belt by using a ratchet. Set the cover aside.

Loosen the bolts that hold the alternator. This will allow you to release the tension on the accessory drive belt (water pump belt). Remove the belt.

Remove the bolts from the water pump pulley and remove the pulley. The crankshaft pulley may need to be removed on some vehicles. If this is the case, use a ratchet to remove the bolts and remove the crankshaft pulley. In some cases you may also need to use a pulley removal tool.

Loosen the bolts that hold the water pump onto the engine by using a ratchet. Remove the water pump from the engine.

Insert a rag into the water pump opening of the engine block. Remove any leftover gasket material on the mating surface of the engine by using a scraper. Clean the area and prepare to install a new water pump.

Installation

Coat the water pump mating surface and the engine block mating surface with gasket sealant (Permatex No. 2 or equivalent). Locate the new gasket that came with your new water pump. Install the gasket and the water pump onto the engine. Using a torque wrench, tighten the water pump bolts to 84 inch-pounds.

Reinstall the drive pulley for the water pump. Torque the bolts to 15 foot-pounds with a torque wrench. Reinstall the crankshaft pulley and torque the bolts to 15 foot-pounds with a torque wrench.

Install the drive belt and adjust the tension by retightening the bolts on the alternator. Do not overtension the belt.

Reinstall the timing belt cover by using a ratchet. Do not overtighten the bolts.

Coat the thermostat housing mating surfaces with gasket sealant. Replace the thermostat and thermostat housing and torque the bolts to 84 inch-pounds with a torque wrench.

Refill the coolant by adding a 50/50 mix of antifreeze and water into the coolant reservoir. Reinstall the negative battery cable and tighten it with a wrench.

Start the engine and check for leaks. Allow the engine to reach normal operating temperature and recheck your antifreeze level. Add more fluid if needed.

Items you will need

  • Set of wrenches

  • Drain pan

  • Ratchet and socket set

  • Pulley removal tool

  • Metal scraper

  • Gasket sealant

  • Water pump gasket

  • Water pump

  • Torque wrench

  • Antifreeze

  • Water

 How to Change the Water Pump on New Volkswagen Beetle

Removal

Bring the vehicle to a complete stop. Turn off the engine, allow the car to cool and open the hood. Remove the negative battery cable, loosening the cable clamp with a wrench. Move the cable to the side.

Find the coolant drain plug on the bottom of the radiator at the front of the vehicle. Put a drain pan underneath the plug. Use pliers to turn the drain plug counterclockwise to allow the coolant to drain from the radiator. After the fluid is done draining, close the drain port by turning it clockwise with the pliers.

Loosen the tension on the accessory drive belt. Use a ratchet to rotate the tension adjustment bolt until the belt can be removed. The bolt is located on the tensioner pulley on the passenger side of the engine

Remove the timing belt covers from the center and upper part of the engine on the passenger side of the engine compartment. These are removed by loosening the fasteners with a ratchet.

Turn the engine crankshaft to the top dead center (TDC) position with a ratchet. The crankshaft is the pulley at the bottom of the engine on the passenger side. The TDC position is marked on the edge of the crankshaft pulley. Rotate the crankshaft with the ratchet until it lines up with the corresponding mark on the engine block.

Loosen the bolt on the timing belt tension pulley with a ratchet and pull the timing belt off by hand. Remove the bolt holding the timing belt guard with a ratchet.

Loosen and remove all water pump retaining bolts with a ratchet. Pull the water pump from the engine. Throw away the O-ring and clean the water pump seating surface with a rag.

Installation

Coat the new O-ring with a bit of coolant and attach it to the water pump. Position the water pump on the engine and push it in.

Insert the water pump retaining bolts and tighten them to 11 foot-lbs. with a torque wrench. Also insert and tighten the timing guard bolt to 15 foot-lbs. with the torque wrench.

Push the timing belt back on to the pulleys by hand. Reinstall the center and upper timing belt covers and secure the bolts with a ratchet. Route the accessory drive belt around the tension pulley and tighten down the pulley with a ratchet.

Fill the coolant reservoir with antifreeze until the fluid is at the "full" line. Reattach the negative battery cable and tighten down the clamp with a wrench.

Start the engine and check for leaks in the water pump area. Allow the engine to heat up to normal operating temperature and recheck the fluid level in the coolant reservoir. Refill if necessary. Turn off the vehicle and close the hood.

Items you will need

  • Set of wrenches

  • Fluid drain pan

  • Needle-nose pliers

  • Ratchet and socket set

  • Shop rags

  • New water pump O-ring

  • Coolant/antifreeze

  • Torque wrench

 How to Replace the Water Pump in a VW Passat

2.8L V6 Passat Engine

Disconnect the negative battery cable.

Push the lock carrier assembly to the service position and remove the front bumper, then take the lower engine slash shield out of the engine.

Place a drain pan underneath the radiator and drain the cooling system from the radiator into the pan.

Take the accessory drive belt, the engine driven cooling fan, the drive belt, the timing belt covers and the timing belt out of the engine.

Loosen and remove the water pump bolts. Remove the water pump, discarding the o-rings and gasket.

Install the new pump with new o-rings and gasket, tightening the bolts to 84 inch pounds (10 Nm).

Reinstall and reconnect the components in the order in which they were removed, making sure to tension the timing belt properly according to necessary procedure.

Refill the engine's cooling system with coolant. Start the car and check for leaks when the engine reaches normal operating temperature.

1.8L Passat Engine

Disconnect the negative battery cable and push the lock carrier assembly to the service position and remove the front bumper, then take the lower engine slash shield out of the engine.

Place a drain pan underneath the radiator and drain the cooling system from the radiator into the pan.

Take the accessory drive belt out of the engine and take out the cooling fan.

Loosen and remove the clamps to the coolant hoses attached to the water pump and take out the intake air duct.

Take the mounting bolts from the alternator and move the alternator forward and remove. Disconnect the wiring to the alternator.

Remove the bolts and brackets for the intake manifold, the engine torque, the cylinder block, the alternator, engine cooling fan and power steering pump. Position these brackets to the alternator, cooling fan and steering pump with a piece of wire and set to the side.

Disconnect the coolant hoses and thermostat from the water pump and remove the bolts to the coolant pump housing, disconnecting it from the timing belt cover.

Remove the pump. Clean all the mating surfaces, discarding the gasket and o-ring.

Install the new pump with a new gasket and o-ring, tightening the bolts to 84 inch pounds (10 Nm).

Reconnect and reinstall all other components in the order in which they were removed, tightening the coolant pump bolts to 18 foot pounds (25 Nm) and the coolant pump housing and timing belt cover bolts to 84 inch pounds (10 Nm).

Refill the engine's cooling system with coolant. Start the car and check for leaks when the engine reaches normal operating temperature.

Items you will need

  • Drain pan

  • Wrench set

  • Coolant

About the Author

This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us.

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