1991 Honda Civic Replacing Radiator

Disconnect the negative battery cable.
Properly drain the cooling system into a suitable container.
Disconnect the fan motor and motor connector.
Disconnect the upper and lower radiator hoses.
Disconnect and plug the automatic transaxle cooling lines at the radiator, if equipped.
Disconnect the coolant reservoir overflow hose.
Remove the radiator attaching bolts and brackets.
Remove the radiator with the cooling fan attached.
Remove the cooling fan and shroud from the radiator.

Check all cooling system hoses for any signs of damage, leaks or deterioration and replace if necessary.

To install:

Attach the cooling fan and shroud to the radiator and install the assembly.
Attach the radiator bolts and brackets. Tighten the radiator bracket bolts to 7 ft. Lbs. (10 Nm).
Connect the coolant reservoir overflow hose.
Connect the automatic transaxle cooling lines to the radiator, if equipped.
Connect the upper and lower radiator hoses.
Connect the fan motor and thermo-switch wire connector.
Refill the system with the proper type and quantity of coolant, check for leaks and bleed the cooling system.
Reconnect the negative battery cable.