The vent temp tells you

@masterautotraining

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Why it worked

The video provides a practical, actionable tip for diagnosing car AC problems that many technicians might overlook. By demonstrating a quick and effective diagnostic step (delta T measurement) and explaining its significance, it offers immediate value to viewers interested in automotive repair.

Summary

This video explains how to diagnose car AC issues by measuring the temperature drop across the evaporator (delta T). It highlights that a low delta T indicates system problems like low refrigerant or a weak compressor, while a good delta T but still hot cabin suggests issues with blend doors, duct leaks, or airflow. The presenter encourages viewers to take an air conditioning class at Master Automotive Training.

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Transcript, structure and on-screen text

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Original caption

Pressures look fine but A/C still not cold? You skipped the fastest test. Measure vent temp vs ambient — delta T (35–50°F). • Good split but still hot? Think blend doors, airflow, duct leaks • Low split (under 20°F)? Think low charge, weak compressor, restriction This is how real techs in Rancho Cucamonga & Southern California pinpoint A/C faults before touching gauges. #MasterAutomotiveTraining #ACTroubleshooting #Diagnostics #AutoTechLife #RanchoCucamonga #SoCalAutoTech #MechanicLife #HVACDiagnostics