How To Install Replace Coolant Thermostat 1992-1998 Honda Civic 1.6L

Difficulty: Intermediate · About 30 min · Honda Civic

Replace the coolant thermostat on a 1992-1998 Honda Civic with the 1.6L engine.

Steps

1. Drain the coolant

   Have a drain pan ready, loosen the radiator drain plug, twist off the radiator cap, let it drain, then tighten the plug.

2. Remove the old thermostat

   Loosen the radiator hose clamp with pliers and pull the hose off the housing, disconnect the temperature sensor's wiring harness, remove the housing's top and bottom 10mm bolts, have a drain pan ready, pull off the housing, then pull the thermostat out.

3. Install the new thermostat

   Clean the housing with an emery cloth, set the thermostat in with its pin at the top, set the housing into place, insert its two 10mm bolts, clean the hose mounting area with the emery cloth, connect the temperature sensor harness, push the hose onto the housing, then tighten its clamp.

4. Refill the coolant

   Add coolant to the radiator through a funnel, twist the cap on, run the engine briefly, twist off the coolant bottle cap, add coolant to the bottle, twist its cap on, run the engine again, then top off as needed.

Check your vehicle’s repair manual for exact specifications and fit.