Guys
Before I tear into the heater plumbing, take a look at my schematic. I can measure 140 degree heat on the engine side of the 4 way valve but on 60 on the heater side. I see the motor on the diverter valve move when I turn the switch, but it still stays cold on the heater side of the lines. So before I open the lines up, does anyone see a plumbing issue with the hoses from the water pump in/out, through the 4 way to the heater core and back? I was told it makes no difference which direction the water enters/exits the heater core, but the in out lines from the engine to the 4 way are important.
I think the 4 way valve may be stuck closed.
Before I tear into the heater plumbing, take a look at my schematic. I can measure 140 degree heat on the engine side of the 4 way valve but on 60 on the heater side. I see the motor on the diverter valve move when I turn the switch, but it still stays cold on the heater side of the lines. So before I open the lines up, does anyone see a plumbing issue with the hoses from the water pump in/out, through the 4 way to the heater core and back? I was told it makes no difference which direction the water enters/exits the heater core, but the in out lines from the engine to the 4 way are important.
I think the 4 way valve may be stuck closed.