Have just noticed the problem, since it hasn't been that cold in Georgia. Have done some extensive research on AllData. There is no control valve for the heater core that I can find. The upper supply hose is quite hot, but the lower one is fairly cool. IF I turn the HVAC system off completely, the lower hose heats right up. As soon as I turn the system on, it tries to blow hot air for a few seconds, goes basically lukewarm, and then I notice that the lower hose goes cool. I have pulled the HVAC/ECACs fuse and done the reset procedure. As near as I can tell, the control actuators seem to be moving as I change temp settings. It is almost as if the heater core has become clogged. Could this possibly be?
have the same problem?
Sunday, January 18th, 2009 AT 3:06 PM