Here is how you replace the thermostat on a 4 Cylinder Honda engine, the procedure should be the same or very similar for all 4 cylinder made Honda Engines that you may find in any Civic or Accord. A stuck closed thermostat could cause overheating issues and a stuck open thermostat will cause delays in your car getting to operating temperature and as a result you might experience high MPG and no heat from your heater among other potential performance issues,
Post time: Jun-21-2017