Originally Posted by zeds_dead
I took off my upper radiator hose today planning on replacing the tstat, and when I put it back on, turned on the engine, it's just full of air. Is there any way to let the air out?
If the air isn't purging, that's a symptom. I suspect the radiator cap could be going bad. Should suck coolant (from the overflow tank) back in to the main system at cooldown via vacuum relief. I would start by replacing the radiator cap (Stant or good quality equivalent).
When you refill the coolant system, try to park pointing slightly uphill. Refill the radiator and let it perk down. Squeeze the top hose until the air bubbles appear in the filler neck and it will refill the upper hose somewhat. Repeat several times until no more bubbles appear. Top up the radiator and overflow tank. Finally, make sure the overflow tank is at the high mark with coolant solution.
Run engine until t-stat opens and you should see more bubbles appear at the fill neck. Refill again to take up the air space. There is a bleed plug over the t-stat housing, but I did not have to use it when I changed coolant. All of the air came out with the above approach.
Check your coolant overflow tank several times over the next week and refill as necessary (as the air burps out of the coolant system).
BTW: Think the '05's use HOAT coolant like the '08's. MOPAR recommends not mixing anti-freeze types.