Engine is overheating

This page is for information only; a mechanic makes the diagnosis.

A rising temperature gauge or a temperature warning light means the cooling system cannot keep the engine cool. Common causes are low coolant, a thermostat stuck closed, the water pump, a clogged radiator, a radiator fan that does not run and leaking hoses.

Stop in a safe place; do not open the radiator or expansion tank cap while the engine is hot. Driving while overheating can damage the head gasket and the engine.

Tap a part to see listings of that type.

The same symptom can have different causes; have a mechanic look at the vehicle before buying a part and, if possible, get the part code from them.

Frequently asked questions

What are the likely causes of "Engine is overheating"?

A rising temperature gauge or a temperature warning light means the cooling system cannot keep the engine cool. Common causes are low coolant, a thermostat stuck closed, the water pump, a clogged radiator, a radiator fan that does not run and leaking hoses.

Can I drive with "Engine is overheating"?

Stop in a safe place; do not open the radiator or expansion tank cap while the engine is hot. Driving while overheating can damage the head gasket and the engine.

Which parts should be checked for "Engine is overheating"?

Common causes include these parts: Thermostat, Water Pump, Radiator, Radiator Fan, Radiator Hose, Coolant Reservoir. The mechanic who sees the vehicle decides which one to replace.