Honda_Cr-V_2001-2006

Thermostat

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Removal & Installation



2.0L Engine

CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

  1. Note the radio security code and station presets.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Drain the engine coolant into a sealable container.
  6.  
  7. Remove the fasteners from the thermostat housing, then remove the thermostat.
  8.  

To install:

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Fig. A thermostat can be tested by placing it in a suitable container filled with water, and heating the water with a hot plate while monitoring the temperature with a thermometer



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Fig. The thermostat should open when the water reaches the correct temperature



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Fig. Always install the thermostat with the small pin at the top. The rubber thermostat seal is installed around the thermostat

  1. Install the thermostat using a new seal. If the thermostat has a small bleed hole, make sure the bleed hole is on the top.
  2.  
  3. Apply an anti-seize compound to the threads of the fasteners.
  4.  
  5. Reassemble in the reverse order of disassembly.
  6.  
  7. Set the heater to the full hot position. Set the heater to the full hot position.
  8.  
  9. Top off the cooling system and overflow reservoir with a 50/50 mixture of a recommended antifreeze and water solution. and bleed the system to remove any air pockets as necessary. Simultaneously squeeze the upper and lower radiator hoses to help push any captured air pockets out of the system.
  10.  
  11. Inspect all coolant hoses and fittings to make sure they are properly installed and if previously opened, close the bleed valve.
  12.  
  13. Connect the negative battery cable.
  14.  
  15. Install the radiator cap loosely and start the engine. Allow the engine to run until the cooling fan has cycled two times, then turn the engine OFF and top off the cooling system as necessary.
  16.  
  17. Install the radiator cap and inspect for leaks.
  18.  
  19. Enter the radio security code.
    WARNING
    The manufacturer does not recommend using a coolant concentration of greater than 60% antifreeze.


    NOTE
    When mixing a 50/50 solution of antifreeze and water, using distilled water may help to keep the cooling system from building up mineral deposits and internal blockage.

  20.  

2.4L Engine

CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

  1. Note the radio security code and station presets.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Drain the engine coolant.
  6.  
  7. Remove the splash shield.
  8.  
  9. Remove the lower hose, then remove the thermostat. Remove and discard the O-ring. Clean the gasket mating surfaces.

    Click image to see an enlarged view

    Fig. Exploded view of the thermostat

  10.  

To install:

  1. Install the thermostat with a new O-ring. Tighten the bolts to 7.2 ft. lbs. (9.8 Nm).
  2.  
  3. Install the lower hose.
  4.  
  5. Install the splash shield.
  6.  
  7. Refill the radiator with engine coolant, and bleed the air from cooling system with the heater valve open.
  8.  

 
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