Posts Tagged: blower fan only works on high speed

Blower motor only works on high speed

Why a Blower Motor Only Works on High Speed Quick Summary If your blower motor only works on high speed, the most likely cause is a failed blower motor resistor. In most vehicles, the high-speed setting bypasses the resistor entirely, so the fan can continue operating on high even when the resistor fails. Other possible causes include: • A bad blower motor control module • A damaged connector • Excessive blower motor current draw, • A faulty fan speed switch • Wiring issues. Diagnosing the problem usually involves inspecting the … Read More