Why is the Corolla air conditioner not heating up?
Pacific Automotive Network Generally speaking, there are two main reasons why a car's heater is not hot enough after it is turned on. One is that there is a problem with the engine's cooling system or the heater's control mechanism components, which do not work properly. The car owner can check the temperature of the two water inlet pipes of the small heater water tank. If both are hot enough, it means there is no problem with the heater control mechanism. If they are both cold or one is hot and the other is cold, there is a problem with the cooling system.
1. The cooling system of the engine is blocked by air, causing the cooling circulation system of the car not to operate normally, resulting in the problem that the heater air is not hot. If the water inlet pipe of the small heater water tank is hot and the outlet pipe is cold, The small water tank is clogged and needs to be replaced.
2. The vehicle's water pump impeller is damaged or lost, resulting in a reduction in the amount of water flowing through the water tank, resulting in a lack of heat in the warm air, and a new water pump impeller needs to be replaced.
3. It is also possible that the thermostat is always open or opens too early, causing the cooling system to cycle ahead of time, and the temperature outside the vehicle is low. The cold wind outside quickly cools the antifreeze, causing the temperature of the water tank to rise. Not enough, the heater is not hot enough. The thermostat needs to be adjusted or repaired.
The reason for problems with the heating control mechanism components may be that the filter is clogged, resulting in insufficient air volume blown into the car by the blower or unreasonable distribution of hot and cold air. At the same time, it is also necessary to check whether each gear of the blower can reach sufficient speed, check whether the control flap of the warm and cold air has fallen off, and repair it in time.
Car owners can try a little trick if they want to warm up the temperature inside the car quickly in winter. That is to start the engine to preheat instead of turning on the air conditioner blower directly. Wait for the water temperature pointer to reach the middle position before turning on the heater air conditioner. Set the air circulation to external circulation. Also turn off the A/C switch. Wait a few minutes and then turn on the heater. The circulation mode is changed to inner circulation.