Bernardino V
New member
I have a 2002 Honda Civic LX. My car is overheating. The radiator looks in great condition, the fans do turn on when connected directly to the battery. The engine coolant temperature sensor, and the sensor where the thermostat is housed has been changed. The thermostat has also been replaced the hoses are good. The radiator fan relay fuse has been changed. The radiator cap is good too. However, I am missing the water reservoir cap. Can the missing reservoir cap cause my car to overheat? Can anyone help me solve this puzzle?