Cheap climate control fix?
I have a 1979 w123 with a leaking automatic climate control (ACC)unit. A few years ago I replaced the original one with a rebuilt and now it is leaking. I don't want to spend the money on another one...the car isn't worth it.
I am planning to replace the ACC with a 3/4 ball valve or gate valve set up, bypassing the ACC altogether. I only need one setting for winter (open) and one for summer (closed). Does anyone know if the ACC unit can be subsituted for 1 valve, or are 2 necessary? Is it OK to just turn off the coolant flow to the heater core, or is it necessary to circulate the engine coolant back to the engine when the heater core is valved off?