1997 Chrysler Concorde, the top of the coolant reservoir (this car doesn’t have access to the actual radiator, if you need to add fluid has to be done from the coolant reservoir) has the drain hose in case of overfill or boil over. The drain hose is attached to the reservoir, but the other end is not attached to anything.
I noticed it overheating today, and when looking under the hood couldn’t see any leaks. Under the car, there was a slight leak coming from the side of the reservoir (passenger side) almost behind and in front of the wheel. When I cut the car off, water started shooting from the hose for boil overs. That either shouldn’t happen, or it should be routed back into the tank.
Any clue what causes this? The fans work, and the top radiator hose gets pressurized while running, but after 5 to 10 minutes at idle it runs hot. Any clues?