Metro, Prizm 2000-2002

Removal & Installation

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  1. Disconnect the negative battery cable.
  2.  
  3. Drain the engine cooling system to a level below that of the thermostat housing.
  4.  
  5. For a 1.3L engine, release the hose clamp in order to remove the upper radiator hose at the thermostat housing cap.
  6.  
  7. For a 1.0L engine, release the hose clamp in order to remove the upper radiator hose at the thermostat housing cap.
  8.  
  9. Remove the two retaining bolts in order to remove the water outlet from the housing.
  10.  
  11. Remove the thermostat and the gasket from the thermostat housing.

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    Fig. Water outlet (2) Thermostat (3) and thermostat housing (4) and gasket (1) assembly-Metro 1.0L engine



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    Fig. Water outlet (3), thermostat (2) and thermostat housing (1) assembly-Metro 1.3L engine

  12.  

To install:

  1. Install the thermostat and the new gasket to the housing.
  2.  
  3. Install the water outlet to the housing.
  4.  
  5. For a 1.3L engine, secure the hose with a hose clamp.
  6.  
  7. Secure the water outlet to the housing with two retaining bolts and tighten to 15 ft. lbs. (20 Nm).
  8.  
  9. Install the upper radiator hose to the thermostat cap.
  10.  
  11. Secure the hose with a hose clamp, for a 1.0L engine.
  12.  
  13. Refill the engine cooling system.
  14.  
  15. Connect the negative battery cable.
  16.  

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the 2 thermostat housing retaining nuts and thermostat housing from the cylinder block.
  6.  
  7. Remove the thermostat and O-ring seal from the thermostat housing.
  8.  
  9. Clean the thermostat housing of any corrosion or debris.
  10.  
  11. Clean the cylinder block mating surfaces.

    Click image to see an enlarged view

    Fig. Remove the thermostat housing retaining nuts (1)-Prizm

  12.  

To install:

  1. Install the thermostat with the air bleed valve facing upward.
  2.  
  3. Install a new thermostat O-ring seal.
  4.  
  5. Install the thermostat housing to the cylinder block and tighten the 2 retaining nuts to 80 inch lbs. (9 Nm).
  6.  
  7. Refill the engine cooling system.
  8.  
  9. Connect the negative battery cable.
  10.  
  11. Start the engine.
  12.  
  13. Start and run the engine until the coolant is at operating temperature. The coolant is at operating temperature when the hoses feel warm and coolant is flowing in the radiator
  14.  
  15. Inspect for leaks in the cooling system.
  16.  
  17. Turn off the engine.
  18.  
  19. Install the radiator cap.
  20.  

 
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