I'm trying to narrow down the problem with my truck. I just replaced the thermostat in it thinking that was the problem. Here we go the blower motor for the heat comes on and blows good, however I can not get it to blow out heat. It is just cool air. I do not know if it is the heater control valve or what. I do no smell any anti-freeze inside the cab as if the heater core was leaking.
There isn't a heater control valve in the lines of the heater core. And with the engine running both hose into and out of the heater core were hot. Could this be one of the systems that is ran off of vacum? And if so where is the part that I might need to replace?
I do intend on making a donation to this site when and if I can get this problem resolved.
Thanks for the help,
have the same problem?
Wednesday, January 21st, 2009 AT 8:01 AM