My Astro only blows cold air from the front. Rear heater works fine. The blower works as advertised, as does the selector (although I did replace a rotted section of vacuum tube across the intake a while back when it failed and I had defrost only). Coolant level is fine. Engine temp is normal.
Both hoses from the control valve to the front heater core remain cold. Would this be an indication of faulty control valve? Blocked heater core? Should I be looking at something else?
Any advice is greatly appreciated!
Monday, December 31st, 2018 AT 12:19 PM