I have a '97 Town Car and I'm bypassing the heater until I have the time and inclination to take the instr panel and all below out to get my hands on the A/C blend motor and door.
I am wondering if coolant flow through that circuit is necessary or would it be OK to simply block it.
My old Caddy had a vacuum operated cutoff valve that stopped coolant flow to the heater core when A/C was on Max and temp set to 60 degrees.
If the LTC has such a thing it is invisible (inside?).
Would it be OK to simply block the coolant supply with a valve? Or is the flow needed for engine cooling?
Thanks in advance for any input/advice.