Engine Coolant Temperature (Ect) Sensor; Operation - Ford Ranger Maintaince And Repair Manual

2. Disengage the wiring harness connector from the IAC valve.
3. Remove the two retaining screws, then remove the IAC valve and discard the old gasket.
To install:
When installing the valve, always discard the old gasket and install it using a new one
4. Clean the IAC valve mounting surface on the throttle body of old gasket material.
5. Using a new gasket, position the IAC valve on the throttle body. Install and tighten the retaining
screws to 71−106 inch lbs. (8−12 Nm).
6. Attach the wiring harness connector to the IAC valve.
7. Connect the negative battery cable.

Engine Coolant Temperature (ECT) Sensor

OPERATION

The engine coolant temperature sensor resistance changes in response to engine coolant temperature. The
sensor resistance decreases as the surrounding temperature increases. This provides a reference signal to the
PCM, which indicates engine coolant temperature.
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HOW TO USE THIS BOOK
... and pull the valve from the intake manifold
REMOVAL & INSTALLATION