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






CAUTION: Care must be taken when handling engine coolant (ECT) temperature sensor. Damage to engine coolant sensor will affect proper operation of the fuel injection system.

REMOVE OR DISASSEMBLE
1. Negative battery cable.
2. Drain coolant below level of sensor.
3. Electrical connector.
4. Carefully back out sensor.


INSTALL OR CONNECT
1. Coat threads (only) with sealer P/N 9985253 or equivalent.
2. Sensor in engine.
3. Electrical connector.
4. Refill lost coolant.
5. Negative battery cable.