All of my wheeling is done in the desert where 100+ temps are common in the summer. My wife likes to go with me, but draws the line at no top or AC in those kinds of temps. So in the interest of not going by myself its hard top on, AC blasting. (truth be told I'm not very fond of top off either
) On our last 100+ degree outing the HVAC system was acting up. In the process of trying to figure out why the heat wouldn't shut off and the AC wouldn't blow through the vents I found that the heater control only adjusts the air flow over the heater core. For some reason I thought there would be a valve on the heater supply line that controlled the flow.
I'm sure I'm dating myself and its been done for decades, but I was surprised.
Is there any reason not to put a cut of valve on the heater supply line? The stock AC is already on the edge of being totally inadequate it would seem keeping the heater core cold would be of some help.