Quote:
Originally Posted by Diseasel300
When the car is switched off, the monovalve is disengaged. Remember, it engages to close off water flow, so for the heater flow to be off, the monovalve is powered. If your A/C is working even halfway properly, it should be able to overcome the heater core heat within a few seconds. If it's taking it minutes to start blowing cool again, you have bigger problems. Make sure your recirculation door is closing.
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The AC is working great. Very cold. But, when even a little bit of very hot water gets in the heater core, there is no way that a good AC is going to cool that down is just a few seconds. The problem is that this poorly engineered valve shouldn't allow even a drop of hot water into the core just because it was switched off for a few seconds or minutes.