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Why does my 2001 Honda Civic keep overheating?
While there are a variety of reasons your Honda Civic is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. Coolant leak (water pump, radiator, hose etc.)
Why are my fans not turning on?
Six things may prevent an electric cooling fan from coming on: Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay. A wiring problem (blown fuse, loose or corroded connector, shorts, opens, etc.)
What causes a Honda Civic 2001 to overheat?
Honda Civic 2001 overheating. You have to find where the leak is coming from, that’s the most important. All the symptoms are an indication of an inefficient cooling system. Possibilities include a faulty radiator fan or temp switch, a bad thermostat, low coolant or air the the system, or a faulty water pump or radiator.
Why is my radiator fan not working on my Honda Civic?
Figure 1. 1999 Civic under-hood fuse box with location of fan relay (circled in red). Another easy way you can check if the radiator fan switch relay is bad is to swap the radiator fan relay with the condenser fan relay. If the radiator fan begins working, this is an indication that the fan relay is bad.
What does the thermo switch on a Honda radiator do?
If the fan switch relay is giving off the appropriate readings and is in working condition, move on to the next step. The thermo switch (also called the cooling fan switch) sends a signal to the cooling fan, so the fan turns on if the coolant gets too hot. If necessary, a replacement thermo switch costs between $10 to $40.
Where is the thermostat plug in a Honda Civic?
Figure 2. Location of thermo switch in a Honda Civic’s thermostat housing. The connector has four holes: two are for the electrical wires of the thermo switch plug and the other two are for the plug’s locking mechanism. Make sure to test the electrical holes and not the locking holes.