1. Cool the Engine: Let the engine cool down completely. This is crucial for safety, as working on a hot engine can cause burns or injuries.
2. Locate the Thermostat: Identify the thermostat housing. In the 1995 Dodge Neon, it is usually found near the top of the engine, towards the front. It's typically a round or oval-shaped housing with a hose connected to it.
3. Drain the Coolant: Place a drain pan under the radiator to collect the draining coolant. Open the radiator drain plug or petcock to drain most of the coolant. (Some coolant may still remain in the system, so be cautious.)
4. Remove the Thermostat Housing: Use a socket wrench or suitable tools to loosen and remove the bolts or screws securing the thermostat housing to the engine block. Be careful not to drop the bolts into the engine compartment.
5. Extract the Old Thermostat: Once the housing is removed, lift out the old thermostat. Take note of the position and orientation of the old thermostat for reference when installing the new one.
6. Clean the Housing: Clean the thermostat housing and gasket mating surfaces thoroughly to remove any dirt, old gasket material, or debris.
7. Install the New Thermostat: Place the new thermostat into the housing, ensuring it is correctly positioned. The thermostat usually has a spring-loaded side that should face the engine.
8. Install the Housing Cover: Place the thermostat housing cover or gasket onto the thermostat housing, aligning it with the mounting bolts. Hand-tighten the screws or bolts slightly at first to hold it in place.
9. Refill the Coolant: Carefully refill the cooling system with the appropriate type of coolant. Refill the coolant slowly, allowing air bubbles to escape. Ensure the coolant level is between the "Full" and "Add" marks on the reservoir.
10. Test the System: Start the engine and let it run for a few minutes with the heater turned on high to circulate the coolant throughout the system. Check for any leaks from the thermostat housing. If there are no leaks, turn off the engine and let it cool down.
11. Check Coolant Level: Finally, recheck the coolant level when the engine is cool and top it off if necessary.
Replacing a thermostat may require some basic tools and knowledge of automotive maintenance. If you are not comfortable performing the replacement yourself, it's advisable to consult with a qualified mechanic.
