If the car heater water tank is vibrating, check and deal with it.
There was abnormal noise caused by air in the heater water tank.
The problem occurred the next day after the antifreeze was replaced.
The problem of the heater water tank being loose.
The iron wire is tied to the buckle. There is a square hole in the buckle and it is tied firmly. The iron wire should be tied to the plastic pipe, because over time, the iron wire will wear out the plastic pipe.