AC Not Cold and Smells Bad - Jeep Wrangler 2020
The air conditioning starts cold but then becomes warm, accompanied by a bad smell. This indicates a potential refrigerant leak, a failing compressor, or a clogged evaporator with mold/bacteria growth.
Diagnosis Details
Possible Causes
Low refrigerant charge due to a small leak (e.g., at seals, hoses, or condenser). The system works initially but loses cooling as pressure drops.
Failing AC compressor clutch or internal compressor wear, causing intermittent operation.
Clogged or dirty evaporator core with mold/bacteria, causing bad smell and reduced cooling efficiency.
Related OBD-II Codes
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What You Should Do
Have the AC system inspected for refrigerant leaks using a UV dye and electronic leak detector.
Check compressor clutch engagement and evaporator drain for blockages.
Clean or replace cabin air filter and consider an evaporator cleaning service if smell persists.
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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.
