Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description And Operation
The cooling system regulates engine operating temperature. It allows the engine to reach normal operating temperature as quickly as possible, maintains normal operating temperature and prevents overheating.
The cooling system also provides a means of heating the passenger compartment and cooling the engine oil. The cooling system is pressurized and uses a centrifugal water pump to circulate coolant throughout the system. A separate and remotely mounted, pressurized coolant bottle is used.
- When the engine is cold the thermostat is closed. The cooling system has no flow through the radiator or engine oil cooler. The coolant flows through the engine, water pump, and passenger compartment heater core.
- When the engine is warm the thermostat is full open. Coolant flows through the engine, radiator, engine oil cooler, passenger compartment heater core, and water pump.
The cooling system consists of:
- Electric cooling fan
- Radiator
- A pressurized coolant de-aeration bottle
- Thermostat
- Water pump
- Engine Coolant Temperature (ECT) sensor
- Cooling system pressure cap
- Coolant
- Engine oil cooler
- Hoses and hose clamps
- Thermostat housing assembly
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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