Posts Tagged: car AC diagnosis
AC Blows Cold, Then Warm: Here’s What’s Wrong
What Causes AC to Blow Cold Then Warm Intermittently Quick Summary If your AC blows cold then warm intermittently, that almost always comes down to pressure, airflow, or control issues. The most common causes I see are low refrigerant, a failing AC compressor clutch, a weak or non-functional condenser fan, or a restriction in the system. I always diagnose this by watching pressures, compressor operation, and airflow—not by guessing or just adding refrigerant. Why Your AC Blows Cold Then Warm Intermittently Your AC system works by compressing refrigerant vapor, cooling … Read More
Why Your Car AC Is Still Blowing Warm Air After Recharge
AC Still Blowing Warm Air After Recharge (Expert Guide) Quick Summary (Read This First) If your car’s AC is still blowing warm air after you’ve added refrigerant, the most common problem is an incorrect refrigerant charge, especially overcharging. DIYers often think that more is better. • DIY recharge kits are not accurate enough to properly charge a system • Adding too much oil can reduce cooling dramatically • If the charge is correct, the issue is likely air in the system, an airflow problem across the condenser, or an internal … Read More