I have a dodge 2001 intrepid with a new rad and hoses. I get heat and the car does not overheat but my overflow bottles bubbles after a drive the car for a good distant. My engine size is 3.2 se. What could be the prblem, i took it back to the preson that install it and he bleed it again and now he said i need a water pump. What do you think.

 

Nearly three months and no one suggested a cause nor did the owner provided an update. Well I think the radiator cap is faulty. Replace with a new one and that should solve the bubbling after shut of. The cap is slowly releasing pressure so as the coolant pressure drops the coolant being over normal boiling temperature, will start to 'boil/bubble'.

 

I had that problem taking care of he had to bleed it a couple more times for it to stop bubbling there was air in the system.

 

The OP probably figured it out by now, but bubbles in the coolant can also be a blown head gasket.