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How to Change the Thermostat in a Honda Accord

by Contributor

The Honda Accord is a practical, comfortable, reliable, economical transportation with easy handling and intelligent engineering. The sixth generation Honda Accord (1998 to 2002) is one of the most popular used cars in the country. Here are the details for do-it-yourself job of changing the thermostat.

Remove the Thermostat

Make sure that the engine and radiator are completely cool. Jot down the radio security code and any station pre-sets. Disconnect the battery ground cable.

Drain the coolant from the engine to a level below that of the thermostat. Use a sealable container to store the coolant.

Release the tension on the clamp on the hose to the thermostat housing with a pair of pliers. Take the hose from the thermostat housing.

Loosen the fasteners that hold the thermostat housing in place. Take out the housing then remove the thermostat.

Install the Thermostat

Set the new thermostat in place with a new seal. Position a thermostat with a bleed hole so that the bleed hole in on top.

Use an anti-seize compound on the threads of the fasteners before installing them. Set the thermostat housing in place and tighten the retaining bolts.

Connect the hose to the thermostat housing. Secure the hose with the clamp. Set the heater to the "full hot" indicator. Open the coolant bleed vale (near the thermostat housing) a half-turn.

Fill the cooling system and the overflow reservoir with the recommended coolant in a 50/50 mix of distilled water to prevent the build up of mineral deposits in the system. Bleed the lines to remove any air pockets.

Make sure all the hoses and fittings are properly positioned and installed. Close the bleed valve.

Reconnect the battery ground cable. Set the radiator cap on the radiator but do not tighten it. Start the engine and allow it to run until the cooling fan has passed through two cycles.

Turn off the engine. Add more coolant as needed. Tight the cap on the radiator. Restore the radio security code and station pre-sets.

Tip

  • No special tools are required to remove or reconnect hoses. Label the hose and its connection before separating.

Warning

  • Drain coolant into a container that can be sealed. Reuse the coolant unless it is contaminated or old.

Items you will need

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