pathfinder is over heating

[Stauffed]

Hi, I'm hoping someone might have some insight for me. My 2003 chilkoot is bubbling out coolant, it has heat when I'm driving but stops blowing heat when I'm at stop light. I checked oil to make sure that there was no coolant in there and checked rad to make sure there was no oil in there. Like I said any help would be appreciated.

Thank-you

[dareno]

I had the same issue the first winter I bought it. I had to bleed coolant system.
I remember I had to park the car on an incline so the front is much higher than back, then open coolant main reservoir (remover metal cover) and a bleeding hose behind engine.
Engine is running and air bubbles should come out/

https://www.youtube.com/watch?v=REjYjiO8xIs