How to Change the Thermostat on a Hyundai Elantra

by Nathaniel Miller

The Hyundai Elantra is a fuel-efficient compact car packed full of features found on many much more expensive cars. With a 2.0L 16-valve four-cylinder engine, the Elantra has more than enough power to get you around town and beyond, while keeping more gas money in your pocket. The engine, however, is only as good as its cooling mechanism. The Elantra's system requires a watchful eye and vigilant maintenance. One such maintenance issue is that of replacing the thermostat. The thermostat is the control valve that allows coolant to flow throughout the engine and its components after the engine reaches a certain temperature. Replacing the thermostat on the Elantra is not difficult and can easily be taken care of in less than 60 minutes.

Step 1

Begin by sliding under the front of the car and locating the radiator drain plug on the bottom of the passenger's side of the radiator. Slide the catch container under the drain plug. Use the socket set to loosen and remove the plug. Allow all the coolant to drain out of the system.

Step 2

Follow the coolant line that comes out of the bottom of the radiator and enters the engine block. Where the line enters the block, there is a small oval cover. Use the socket set to remove the two screws holding this oval cover on. Below the cover, you will find the thermostat.

Step 3

Pull the thermostat out and then slide in the new thermostat. Replace the cover and tighten down the mounting screws. Unscrew the radiator cap and fill the system with a 50/50 mix of water and radiator fluid. Start the car and see if it cools down like it should.

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