How to Repair a Car Blower That Stops Working?

1 Answers
DiJessica
07/28/25 5:12pm
After disconnecting the power, open the rear cover of the blower. Add a few drops of lubricating oil (such as sewing machine oil) into the bearing sleeves at both ends of the rotor. While adding the oil, gently rotate the blades until they move smoothly, which should resolve the blower issue. Reasons why a car blower stops working: Prolonged use of the blower leads to excessive dust accumulation, increasing the friction coefficient between the rotor and bearings. This can cause the rotor to become obstructed or even jammed, resulting in overheating and damage to the coil. Solutions for coil damage: First, disconnect the power. Separate the two connection points between the blower's lead wires and the power supply wires, leaving them suspended (ensure the two ends of the power wires do not touch each other to avoid a short circuit). Then, turn on the power and carefully test both ends of the power supply wires with a test pen. If one end lights up and the other does not, it indicates the power supply line is normal, and the issue may be a damaged blower coil. If both ends light up or neither does, it suggests a problem with the power supply line.
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