Honda - Accord Prelude 1996 2000

Thermostat

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REMOVAL & INSTALLATION





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Fig. After loosening the hose clamp, disconnect the hose from the thermostat housing



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Fig. Unthread the bolts from the thermostat housing



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Fig. Once all the bolts have been removed, pull the thermostat housing away from the engine



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Fig. Installed view of the thermostat and gasket as it sits in the housing



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Fig. Remove the thermostat by pulling it straight out from the housing



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Fig. Remove the gasket from the thermostat and replace, if necessary



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Fig. View of the thermostat and gasket



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Fig. The thermostat housing on most models has two notches cut into it to ensure the correct installation of the thermostat



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Fig. During installation, always position the air bleed at the top of the thermostat


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, to a level below the thermostat.
  6.  
  7. Use a pair of pliers to release the tension from the hose clamp, then disconnect the hose from the thermostat housing.
  8.  
  9. Remove the fasteners from the thermostat housing, remove the housing, then remove the thermostat.
  10.  

To install:

  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. Position the thermostat housing and secure with the retaining bolts.
  6.  
  7. Attach the hose to the housing and secure with the hose clamp
  8.  
  9. Set the heater to the "full hot" position.
  10.  
  11. On the 2.2L and 2.3L engines, locate the coolant bleed valve near the thermostat housing and open the valve 1 / 2 turn.
  12.  

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.

  1. 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.
  2.  


WARNING
The manufacturer does not recommend using a coolant concentration of greater than 60% antifreeze.

  1. Inspect all coolant hoses and fittings to make sure they are properly installed and if previously opened, close the bleed valve.
  2.  
  3. Connect the negative battery cable.
  4.  
  5. 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.
  6.  
  7. Install the radiator cap and inspect for leaks.
  8.  
  9. Enter the radio security code.
  10.  

 
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