Quote:
Originally Posted by BENZSTER
If I remember correctly, there is a small plastic filter basket within the mono valve housing. I believe you have to remove the mono valve to look down inside to see it. I'm thinking If you flushed your coolant system recently (recent radiator replacement) this filter may have enough sediment build up to cause your issue.
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I didnt realize that. I have installed new thermostat and radiator and flushed the heater core. I have constant heat with the 'modified' monovalve I installed. When the new CCU arrives and I install the correct monovalve I will check for that screen in there...good tip, THANKS!!