stubs300
Senior Member
Long story short, 66-300 w/ac. Getting ready to move and did a 3X flush on the cooling system last month. Flush, fill, drive, cool, flush, repeat. Like I said, did that 3 X and doing this I also had the heat on to circulate thru the system and the heater worked fine! Took it out today for a spin and have no heat. The temp control cable moves the actuator so it does move from 1 end to the other no problems. All other actuators work going from ac/ max ac/ heat, defrost, etc. but still no temp change. Both hoses going to/from engine to firewall are the same temp. However, the short hose from each fitting at the firewall is cool. Looks like a bypass hose or something? I'm thinking that I'll have to flush the heater core from both those fittings and focus on the heater core alone. Ideas, hint's, tips, whatever's? Thanks