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What does it mean when car runs hot in traffic and normal when speed is up?
Wiki User
∙ 12y ago
The electric fan must not be igniting when needed. When the motor reaches a certain temperature the thermostat opens and let coolant circulate through the system. However, the coolant also heats up and needs to be cooled at the radiator. When the car is moving, the wind from the motion causes the radiator to cool off, subsequently cooling the coolant.
If the vehicle is running but not moving, the motor heats up and since there is no wind, the radiator fans are turned on to cool of the radiator.
if your car has this problem it means the electric fan thermostat must not be working or the fans itself aren't working. Check for loose wires, connectors, relay and fuse before assuming is the thermostat or the fans.
Wiki User
∙ 12y ago
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