Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Heater Core: Service and Repair

1. Drain engine coolant into suitable container, then remove dash panel as described under Dash Panel.
2. Remove evaporator core as described under Evaporator Core.
3. Remove heater hose clamp, then heater hose and quick coupler, Fig. 9.
4. Disconnect air mix actuator, airflow mode actuator and water temperature sensor electrical connectors.
5. Remove heater unit.
6. Reverse procedure to install.

Fig. 9 Heater Core Replacement: