What is the reason for the car air conditioning blower only working in the first gear but not in other gears?

1 Answers
MiaAnn
07/29/25 3:51pm
The reasons for the car air conditioning blower only working in the first gear but not in other gears are as follows: Poor contact: The main control switch has poor contact, and the switch should be replaced in time. Use a multimeter to measure the contact resistance of the main control switch, and the main control switch or the fan motor coil should be replaced promptly. Wire port damage: Damage to the fan motor wire port. Loose screws: The fastening screws between the fan motor and the fan blade are loose, and the fastening screws should be tightened. Fan capacitor open or short circuit: The fan capacitor is open or short-circuited. The capacitor should be checked promptly, and if necessary, a capacitor of the same specification should be replaced in time.
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