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)

Or, hide this message: temporarily or permanently

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

CAUTION:Care must be taken, when handling coolant sensor. Damage to coolant sensor will affect proper operation of the fuel control system.

REMOVE OR DISCONNECT
1. Negative battery cable.
2. Drain cooling system below level of sensor.
3. Electrical connector releasing locking tab.
4. Coolant sensor from engine.

INSTALL OR CONNECT
1. Coolant sensor in engine.
2. Electrical connector.
3. Refill coolant system.
4. Negative battery cable.