Weak Airflow with Intermittent AC and Bad Smell
The AC system has intermittent weak airflow, reduced cooling, and a bad smell. This suggests a blockage or buildup in the evaporator or air distribution system, possibly due to a dirty cabin air filter, mold, or a failing blower motor.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter restricting airflow and causing odors from trapped moisture/debris.
Mold or mildew buildup on the evaporator coil, causing bad smell and reduced airflow when wet.
Failing blower motor resistor or blower motor, causing intermittent fan speed issues.
Debris (leaves, etc.) blocking the evaporator or air intake, leading to intermittent airflow.
Related OBD-II Codes
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What You Should Do
Replace the cabin air filter first.
If smell persists, use an AC evaporator cleaner.
Check blower motor operation at all speeds; if intermittent, test the resistor or motor.
Inspect air intake for debris.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
