For 1990-2009 cars

### Removal Procedure

Caution: Refer to Battery Disconnect Caution in the Preface section.

1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
3. Remove the heater/air distributor case assembly. Refer to HVAC Module Assembly Replacement .
4. Remove A/C expansion valve. Refer to Thermal Expansion Valve Replacement .
5. Remove the wiring harness and electrical connectors from the heater/air distributor case assembly.
6. Remove the screws that connect the heater core housing and the evaporator housing.
7. Remove the evaporator core cover screws from the evaporator core housing.
8. Remove the evaporator core.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

1. Install the evaporator core into the case.
2. Install the screws on the evaporator core housing.

Tighten
Tighten the evaporator core cover screws to 1.2 N·m (11 lb in).

3. Install the screws that connect the heater core housing and the evaporator housing.

Tighten
Tighten the screws to 1.2 N·m (11 lb in).

4. Connect the wiring harness and the electrical connectors to the heater/air distributor case assembly.
5. Install A/C expansion valve. Refer to Thermal Expansion Valve Replacement .
6. Install the heater/air distributor case assembly. Refer to HVAC Module Assembly Replacement .
7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
8. Connect the negative battery cable.