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…)