Replacing water pump on a 94 cutlas supreme instructions

2.3L Engine

Disconnect the negative battery cable.


Unfasten the upper engine torque strut and rotate the engine rearward.


Disconnect and remove the oxygen sensor, if needed.


Remove the exhaust heat shield and EGR valve, if equipped.


Disconnect the exhaust pipe from manifold.


Remove the exhaust manifold, as outlined earlier in this information.


Partially drain the engine coolant, into a suitable container, to a level below the water pump.


Disconnect the coolant return hose and lower coolant pipe from the pump.


Unfasten the water pump retaining bolts, then remove the pump. Remove and discard the gasket.


To install:





Thoroughly clean the gasket mating surfaces.


Position a new gasket, then install the pump and secure with the retaining bolts. Tighten the bolts to 19 ft. lbs. (26 Nm).


Attach the lower coolant pipe and tighten to 124 inch lbs. (14 Nm).


Connect the coolant return hose.


Install the exhaust manifold and pipe, oxygen sensor, EGR valve and heat shield.


Return the engine to its proper position and install the torque strut.


Refill the engine with the proper type and amount of coolant.


Connect the negative battery cable then start the engine and check for coolant leaks.
2.3L Engine

Disconnect the negative battery cable.
Unfasten the upper engine torque strut and rotate the engine rearward.
Disconnect and remove the oxygen sensor, if needed.
Remove the exhaust heat shield and EGR valve, if equipped.
Disconnect the exhaust pipe from manifold.
Remove the exhaust manifold, as outlined earlier in this information.
Partially drain the engine coolant, into a suitable container, to a level below the water pump.
Disconnect the coolant return hose and lower coolant pipe from the pump.
Unfasten the water pump retaining bolts, then remove the pump. Remove and discard the gasket.

To install:

Thoroughly clean the gasket mating surfaces.
Position a new gasket, then install the pump and secure with the retaining bolts. Tighten the bolts to 19 ft. lbs. (26 Nm).
Attach the lower coolant pipe and tighten to 124 inch lbs. (14 Nm).
Connect the coolant return hose.
Install the exhaust manifold and pipe, oxygen sensor, EGR valve and heat shield.
Return the engine to its proper position and install the torque strut.
Refill the engine with the proper type and amount of coolant.
Connect the negative battery cable then start the engine and check for coolant leaks.

2.5L Engine

Disconnect the negative battery cable.


Remove the alternator. For details, please refer to the procedure in of this repair guide.


Remove the convenience center heat shield.


Partially drain the coolant, into a suitable container, to a level below the water pump.


Unfasten the 4 water pump-to-engine attaching bolts, then remove the water pump and gasket.


Thoroughly clean all gasket mating surfaces.


If a new pump is being installed, remove the pulley from the old pump and install on the new pump.



To install:





Position a new gasket, then install the pump and pulley assembly.


Install the water pump attaching bolts and tighten to 24 ft. lbs. (33 Nm).


Install the convenience center heat shield.


Install the alternator, as outlined in of this repair guide.


Connect the negative battery cable.


Refill the cooling system with the specified amount of engine coolant.


Start the engine and check for coolant leaks.

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Disconnect the negative battery cable.
Remove the alternator. For details, please refer to the procedure in of this repair guide.
Remove the convenience center heat shield.
Partially drain the coolant, into a suitable container, to a level below the water pump.
Unfasten the 4 water pump-to-engine attaching bolts, then remove the water pump and gasket.
Thoroughly clean all gasket mating surfaces.
If a new pump is being installed, remove the pulley from the old pump and install on the new pump.

To install:

Position a new gasket, then install the pump and pulley assembly.
Install the water pump attaching bolts and tighten to 24 ft. lbs. (33 Nm).
Install the convenience center heat shield.
Install the alternator, as outlined in of this repair guide.
Connect the negative battery cable.
Refill the cooling system with the specified amount of engine coolant.
Start the engine and check for coolant leaks.
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