Under the air intake (close to the throttle body) there is a joint that the lower water hose attached to the engine. Open it and remove the old thermostat and replace it with the new one. It should take about 10 minutes.
How do you replace a radiator on a 1991 Honda Accord
The 1991 Honda Accord is not equipped with an A/C filter or Cabin Filter.
get new car
Defective thermostat. Service the cooling system and replace the thermostat.
The water temperature sensor on your 1991 Honda accord, is located on the front of the engine. The sensor is above the water thermostat housing.
There would be no reason to replace it unless it is not working.
If it is overheating or taking a long time to reach full operating temperature then it may need a new thermostat. If you even suspect it is not functioning properly just replace it.
Curb weight 2,822 lb of a 1991 Honda accord
do 1991 honda accords have airbags?
The 1991 Honda Accord did not come equipped with a cabin filter.
where is the fuel pump relay for a 1991 Honda accord located
replace your speed sensor