[jimh123]

I'm having the same problem, flushed core through those
steel lines, water went through nice, also replace my thermostat,
added fluid, it's warm but not hot air, turn fan on higher or at idle
goes cold again

my temp runs at about 1/3 to 1/2, engie really never gets hot

It almost like there is a bypass valve or someting allowing
fluid to pass even though the thermostat is closed