lovessubies

It's a genuine Subaru thermostat, and it was about 50degrees F outside when it over heated, if the heater core was blocked would it still blow out hot air? The fans are working correctly, i have burped it about ten times and no air comes out, but when its hot or over heating the upper hose is hot but when i squeeze it it feels like there is nothing in it... And then as it cools I.can hear and feel the hose sucking the coolant back in from the over flow tank also the bottom rad hose is sometimes cool to the touch when the upper is piping hot

So I have a 96 Impreza L 2.2 AWD that seems to only over heat when I go up I-90 at Snoqualmie pass. I snow board and used this car last year without any problems. But now it over heats. In the last month I've replaced the radiator, thermostat, water pump, timing belt, hoses, and headgaskets. And it still over heats when I go up the pass. I've raised the front.of the car when I refilled the coolant and filled by pouring directly into the upper rad hose and then let it burp with the cap off and the heat on. I'm out of ideas.. the thernostat is.in the correct upside down way, there is never any bubbles coming from the overflow tank or radiator while.its running... Any ideas?