I have a 2005 Honda Civic with the 1.7L engine. Did some work on the car for my cousin cause it was overheating and found the water pump was leaking. So replaced the water pump and while bleeding, we noticed that it had a hole in the radiator as well. So it got a new radiator and thermostat as well. Well while bleeding it after replacing all of that, it had lots of air coming out of the bleeding funnel that increased with rpm so that lead us to replacing the head gasket which I found out was a common issue on this engine. Took the head to the machine shop and had it checked over and resurfaced. Got the head back on and started attempting bleed it again and this time it was violently spitting coolant out of the bleeding funnel which I though was possibly just a bunch of air bleeding out at once however after letting it spit for a little bit, I pulled the thermostat housing off and removed the thermostat and started the process again. This time it stopped spitting coolant out and got heat in the cab. So I'm at a loss as to what the issue could be based on these symptoms now. Should also mention that each time it was bled the heater was on all the way and it never got heat until the last time. The temp gauge never showed that it was overheating either it was in the middle the whole time. Also, the cooling fans are not kicking on and the only way I can get them on is to bypass the temp sensor for it with a paperclip. The temp sensor for that was also replaced.