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

Engine Coolant Temperature (ECT) Sensor:





1. Partially drain engine cooling system.
2. Disconnect battery ground cable.
3. Disconnect engine control sensor wiring from Engine Coolant Temperature sensor (ECT sensor).
4. Remove engine coolant temperature sensor from intake manifold.
5. To install, reverse removal procedure. Tighten engine coolant temperature sensor to 16-24 Nm (12-17 lb-ft). Refill cooling system.