Mitsubishi Galant air and heat only blowing from exhaust vents, partial defrost on full blast setting on Mitsubishi Galant

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mitsubishi Galant owners report experiencing issues with their air and heat systems, such as air only blowing from the exhaust vents and providing partial defrost even on the full blast setting. These problems may be related to a malfunctioning electric actuator, which controls the air mix door for heat or AC, or a failing blower motor that reduces air pressure despite the heater and air conditioner still functioning. Additionally, some owners find that a clogged heater core restricts the flow of hot coolant necessary for effective heating. It is recommended that owners seek a professional diagnosis to identify the specific issue, as problems may involve electrical, mechanical, or coolant-related systems. Addressing these concerns through repairs or replacements of the affected components can help restore proper airflow and heating functionality.

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