Quote:
Originally Posted by oil pan 4
Yeah the heater core stays hot and a little door closes it off from the hvac system.
Imports will use a divert valve most of the time.
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My Proton and Jeep don't have diverter valves - the Renault and Fiat have too much underhood plastic for me to see without dismantling. The Jeep in particular I've noticed a plasticy smell after a couple hours of driving - over time that's got to be bad for the heater box.
I found a block off valve for $15 -that can go in the Proton, and a nice all metal four way bypass for a bit more - that will go in the Jeep.
I'll get some before and after vent temps when I'm done.