Older cars with factory air come equipped with a POA valve, which is a mechanism that prevents the Evaporator from freezing by by-passing excessive system pressure. In last month’s Tech Talk Blog, we explained how to determine if your POA valve is failing and whether or not the POA valve on your ac system can be rebuilt. Sometimes we get questions about adjusting the POA valve, so we thought we would share this information too. Adjusting a POA valve is quick and easy if you simply follow these steps….. (more…)
Archive for the ‘POA Valves’ Category
A How To Guide: Adjusting the POA Valve
Monday, October 24th, 2011POA – Knowing These 3 letters May Help Keep Your A/C Evaporator From Freezing!
Monday, September 19th, 2011All air conditioning systems have something built into the system to prevent your car’s evaporator from getting so cold that it freezes. In some systems, this mechanism is a thermostat, but in most mid 60′s to mid 70′s GM vehicles and some 70′s Ford vehicles, it’s a POA (Pilot Operated Absolute) Valve. (more…)
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