Is the inlet pipe of Excelle warm air thicker and the outlet pipe thinner?

The inlet pipe of Excelle warm air is thicker and the outlet pipe is thinner. Warm air tank inlet and outlet pipes, measure the coarse inlet pipe and fine outlet pipe, and cut off the pipe length. When the antifreeze drips from the bottle, the pipeline is cut off and the joint is connected immediately. The thermostat is often turned on or turned on too early, and the outside temperature is very low. Especially when the car is running, the cold air quickly cools the antifreeze, so the engine water temperature can't come up, and the warm air is not hot.

The principle of hot air

The warm air of the car is blown into the cab by the blower. If the air volume is insufficient or the distribution of cold and hot air is not good, the heat of the warm air tank cannot be dissipated, which will also cause the temperature of the warm air not to rise. At this time, check whether the filter is dirty or blocked, clean it, replace it in time if necessary, and then check the operation of each gear of the blower.

Each gear must reach sufficient speed. If the knob is set to the warm air position, the air volume is large enough and the wind direction is normal, and the cold air is blown out, check whether the cable of the hot and cold air control flap in the warm air box falls off, whether the warm air impeller is damaged, whether the flap falls off, etc. After troubleshooting, the warm air will get hot.