00:00 Contents
00:19 1. What is a thermostat?
01:44 2. How the thermostat works?
2.1 Thermostat closed
2.2 Thermostat open
03:14 3. Symptoms of a bad thermostat
3.1 Engine overheating.
3.2 Fluctuating engine temperature.
3.3 Poor engine performance.
3.4 Heater malfunction.
3.5 Rumbling noises.
06:31 4. How the engine thermostat tested
08:37 5. Frequently Asked Questions
5.1 Can you drive with a bad thermostat?
5.2 Can you run a car without a thermostat?
5.3 Is it hard to change a car thermostat?
5.4 Do I have to drain coolant when replacing the thermostat?
5.5 Why does my car thermostat keep going bad?