Intermittent Weak A/C Airflow with Bad Odor
The A/C system in your 2020 Jeep Grand Cherokee is producing weak airflow that comes and goes, along with a bad smell. This points to a likely issue with the cabin air filter, evaporator core, or blower motor resistor, rather than a refrigerant leak.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter restricting airflow and causing musty odor
Mold or debris buildup on the evaporator core causing bad smell and reduced airflow
Failing blower motor resistor or blower motor causing intermittent fan speed
Blocked or partially closed blend door or air distribution duct
Related OBD-II Codes
Not satisfied with this diagnosis?
Try Another DiagnosisWhat To Do Next
What You Should Do
First, replace the cabin air filter (located behind the glove box).
If the odor persists, have the evaporator coil inspected and cleaned.
Check the blower motor resistor and blower motor for intermittent operation.
If airflow remains weak, inspect the blend door actuator and ductwork for obstructions.
Related Repairs
Share this diagnosis
Help others with similar symptoms
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.
