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Ask Don 'Mo Lurch' Your Own Que...
Don 'Mo Lurch'
Don 'Mo Lurch', Auto Service Technician
Category: Honda
Satisfied Customers: 20594
Experience:  Aftermarket & Factory Mobile Electronics. Sales, Installation & Repair for 30 years. R/S, etc.
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Thermostat located on a 1994 Honda Accord and how do i replace it?

Customer Question

Where is the thermostat located on a 1994 Honda Accord and how do i replace it?
Submitted: 10 years ago.
Category: Honda
Expert:  Don 'Mo Lurch' replied 10 years ago.

The Thermostat is located Under the Housing that your radiator Hose is connected to on the engine. You will need to Remove the Housing to get to the Thermostat:

REMOVAL & INSTALLATION

See Figures 1, 2, 3 and 4

  1. With the engine cold, drain the cooling system.

  2. Disconnect the radiator hose from the thermostat housing outlet.

Click image to see an enlarged view
Fig. 1: Use a pair of pliers to compress the spring clamp, then slide it up the hose and disconnect the hose from the housing

 

  1. Remove the thermostat housing outlet and remove the thermostat.

Click image to see an enlarged view
Fig. 2: Remove the nuts/bolts securing the thermostat housing ...

 

Click image to see an enlarged view
Fig. 3: ... then remove the thermostat housing

 

Click image to see an enlarged view
Fig. 4: Once the housing is removed, the thermostat can be removed from the engine

 

  1. Using a putty knife, clean the gasket mounting surfaces.

If the thermostat is equipped with a pin valve, be sure to install the thermostat with the pin facing upward.

To install:

  1. Install a new thermostat the gasket, O-ring or sealant (as applicable). Always install the spring end of the thermostat facing the engine.

  2. Tighten the thermostat cover-to-thermostat housing bolts to 9 ft. lbs. (12 Nm).

  3. Connect the radiator hose to the thermostat housing.

  4. Fill, then bleed the cooling system. Check for leaks.