Overheating is caused by weak or no cycling of antifreeze. The antifreeze can be blocked by a defective or worn out thermostat, or a closed inline valve in the heater core inlet line.
It can also overheat by low levels of antifreeze. It there is nothing to pump into the engine to cool it down, it can't cool.
A dirty radiator is also a problem. Sometimes the cooling ports get plugged and restricts the flow. A radiator flush works great!
SOURCE: how do i change the thermostat on my 1992 honda accord
the thermostat is located at the end of your upper radiator in a housing .there are 2 ten mm. bolts that hold the housing on. loosen going counter clockwise .make sure engine is cold .take housing off the t-stat is there.hope this helps!!!!!!!!
SOURCE: 1997 honda accord overheating
well you should first hard wire the non working fan to the battery to see if it is ok, then I would check the engine coolant temperature sensor, it is the sensor that tells the computer to turn the radiator fan on
SOURCE: 2005 Honda accord-air conditioner not working good
Your car probably has two fans at the radiator, one is for the coolant and the other is for the a/c condenser. Find out which one stays on after you turn off your car after a normal trip, this fan is good. Check the fan that did not run, you may have to connect 12v directly to the connector of the non working fan, if it won't run with a direct connection, the fan motor is bad, if the fan does run, then find the fan switch and test or replace it, you can find information on testing a the Autozone.com site.
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