Removing the Thermostat

• 1). Open the hood and place a drain pan under the radiator drain valve.
  
  
• 2). Remove the radiator cap.
  
  
• 3). Open the radiator valve and let the coolant from the radiator drain.
  
  
• 4). Close the radiator valve once the coolant has finished draining.
  
  
• 5). Raise the front of the vehicle using a floor jack and safely support it on two jack stands.
  
  
• 6). Remove the engine under cover using a wrench or ratchet and socket.
  
  
• 7). Disconnect the lower radiator hose from the thermostat housing on the engine side using a pair of rib joint pliers, Phillips screwdriver or ratchet and socket, depending on type of clamp used on your particular model.
  
  
• 8). Unscrew the two thermostat housing mounting bolts using a ratchet and socket.
  
  
• 9). Remove the thermostat housing and thermostat unit from the vehicle.
  
  

Installing the Thermostat

• 1). Clean the thermostat housing and engine mating surfaces using a soft brush to avoid damaging the surfaces.
  
  
• 2). Set the new thermostat in place along with a new rubber ring. Make sure the thermostat spring points towards the engine and the jiggle pin faces upward.
  
  
• 3). Install the thermostat housing and start the two mounting bolts by hand to avoid damage to the threads.
  
  
• 4). Tighten the bolts using a ratchet and socket.
  
  
• 5). Install the lower radiator hose on the thermostat housing and tighten the clamp using a pair of rib joint pliers, Phillips screwdriver or ratchet and socket, depending on type of clamp used on your particular model.
  
  
• 6). Replace the engine under cover using a ratchet and socket.
  
  
• 7). Lower the vehicle.
  
  
• 8). Refill the cooling system with 50 percent water and 50 percent new anti-freeze. Pour the coolant through the radiator neck using a funnel if necessary.
  
  
• 9). Replace the radiator cap.
  
  
• 10
  
  Refill the coolant reservoir with coolant, bringing the level between the Low and Full marks.
  
  
• 11
  
  Start the engine and let it idle for about three minutes to bring the engine to operating temperature.
  
  
• 12
  
  Check the coolant reservoir level and add if necessary to bring the level between the Low and Full marks.
  
  
• 13
  
  Turn off the engine.