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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Coolant Temperature Sensor/Switch (For Computer): Service and Repair





- Drain off enough coolant so that there is none left in the expansion tank.
- Remove thermostat housing (2 TORX 40 screws).
- Disconnect sensor.
- Disconnect terminal pins from connector (see Image) in order to thread the wiring through a ring wrench.
- Remove temperature sensor and replace.
- Test sensor.
- Reinstall in reverse order.

NOTE: Do not forget to top up coolant. Then run engine to normal operating temperature and check coolant level.