How To Replace A Car Thermostat Yourself Removing and replacing the thermostat. loosen the top hose clip, then ease off the hose. partially drain the cooling system first. with a normal top mounted thermostat you need drain only part of the cooling system . do not drain it while the engine is hot — you may be scalded. wait for the engine to cool. Follow these steps to successfully replace the engine thermostat in your car.
Radiator Function In A Car Cheaper Than Retail Price Buy Clothing As the engine temperature rises, the wax expands and steadily pushes on a rod that opens the thermostat, allowing coolant to flow. when the engine temperature drops, the wax begins to harden, and the thermostat starts to close. this process is continuous, with the thermostat adjusting how far it's open or closed while the engine is running. 13) burp the radiator and replace the radiator cap. burp the cooling system by removing the cap at the highest point of the cooling system. this is often the radiator cap, but some vehicles have a separate cap for this. let the engine come up to operating temperature. wait for the thermostat to open. Here are the steps to remove the old thermostat: 1. locate the thermostat housing: the thermostat is usually located under the thermostat housing. it’s connected to the upper radiator hose. 2. remove the housing: use your socket set and screwdriver to remove the bolts securing the thermostat housing. 3. start your vehicle’s engine to run coolant through the system. turn the key in the ignition to run your vehicle’s engine. leave the engine to idle for 5–10 minutes so the engine can warm up and activate your thermostat. as the engine runs, look at the thermostat housing to see if there are any leaks.
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