- Replacement thermostat (check your owner’s manual for specifications)
- New gasket
- 9/16-inch wrench
- Small screwdriver
- Pliers
- Funnel
- Coolant
- Rags
- Bucket
Step-by-Step Guide:
1. Prepare the Vehicle
- Park the vehicle on level ground and turn off the engine.
- Allow the engine to cool down if it has recently been running.
- Engage the parking brake.
2. Drain the Coolant
- Locate the radiator petcock or drain plug. It’s usually found near the bottom of the radiator.
- Place a bucket under the drain plug to catch the coolant.
- Open the petcock or drain plug to allow the coolant to drain.
3. Remove the Thermostat Housing
- The thermostat housing is usually located on the upper side of the engine block.
- Use a 9/16-inch wrench to loosen the bolts holding the thermostat housing in place.
- Carefully remove the thermostat housing. Be cautious as some coolant might still be present.
4. Remove the Old Thermostat
- Once the housing is removed, you’ll see the old thermostat.
- Use a screwdriver to pry it out of its housing.
- Remove any old gasket material from the housing and the thermostat mating surfaces.
5. Install the New Thermostat
- Position the new thermostat in the housing.
- Make sure it is properly seated and the jiggle valve (if equipped) is facing up.
- Place a new gasket on the mating surface of the thermostat housing.
6. Reinstall the Thermostat Housing
- Carefully place the thermostat housing back onto the engine block.
- Align the bolt holes and secure the housing with the bolts you removed earlier.
7. Refill the Coolant
- Remove the radiator cap (or overflow tank cap).
- Use a funnel to add coolant to the radiator or overflow tank until the level is correct (refer to your owner’s manual for specific amounts).
- Replace the radiator cap or overflow tank cap.
8. Test the System
- Start the engine and let it run for a few minutes.
- Check for any leaks around the thermostat housing.
- If no leaks are found, turn off the engine and allow it to cool down.
- Recheck the coolant level and add more if necessary.
9. Clean Up
- Clean any spilled coolant with rags.
- Properly dispose of the used coolant according to local regulations.
Note:
- The steps mentioned above are general guidelines. Specific steps may vary depending on your vehicle model. If you’re not comfortable performing this task, it’s best to seek the assistance of a professional mechanic.
