Mazda CX-5 Service & Repair Manual: Thermostat

Mazda CX-5 Service & Repair Manual / Engine / Cooling / Thermostat

Purpose, Function

When the engine coolant temperature is low, the thermostat blocks the engine coolant passage between the radiator and engine. As a result, because engine coolant cycles without passing through the radiator, warming is promoted.

Construction

The thermostat is installed to the rear part of the cylinder head.

The thermostat has the following parts:

Operation

1. When the engine coolant temperature decreases, the thermostat valve closes and engine coolant circulates without passing through the radiator.

2. When the engine coolant temperature is 80.5—83.5°C, the thermostat valve starts to open and the engine coolant passed through the radiator flows to the engine.

Thermostat Removal/Installation

WARNING: Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may ...

Emissions

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