Hi, there's a leak coming from the quick connector, I think. It's not the 5/8" heater hose. I was going to replace the quick connector first. Then the piping above. Does any one know if the piping coming through the floor is the same size as the piping coming from the front of the van? Auto parts store have Dorman two sizes of heater hose connectors part number 800-416 and 800-419.
99 caravan 3.3

 

Dodge no longer sells them. There's a part that I had to remove from the fitting. The locking white clip lower half had to be removed. I don't know if it broke off or it comes in two pieces. I also replace the 5/8" rubber hose to be safe and added a new hose clamp. I ran the rear heater, then I let the coolant cool. Then I added a little coolant.