Car Engine Overheating

Car overheating? Learn what to do immediately, common causes, and repair costs ($150–$1,500).

Typical repair cost: $150–$1500 · DIY difficulty: Easy · About 10–20 minutes (initial check).

What usually causes it

• Low coolant level
• Coolant leak
• Failed thermostat
• Broken water pump
• Faulty radiator fan
• Clogged radiator
• Blown head gasket

What you need

• Coolant
• Flashlight

How to fix it yourself

1. STOP DRIVING IMMEDIATELY — pull over safely and turn off the engine
2. Wait at least 15 minutes for the engine to cool before opening the hood
3. NEVER open the radiator cap when hot — pressurized steam can cause severe burns
4. Once cool, check coolant level in the overflow tank — add coolant if low
5. Look for visible leaks under the car — green, orange, or pink fluid is coolant
6. Check if the radiator fan is running when the engine is warm

When to call a pro

Always if the temperature gauge hits red. Continuing to drive an overheating car can cause catastrophic engine damage ($3,000–$7,000).

Get a fixed price from a local pro