Chosen Solution

2014 kia sportage. I changed the thermostat twice. The water pump seems to be fine. The car will push coolant into the reservoir but won’t pull it back into the radiator. If I fill the radiator with fluid it will stay cool for about 2.5 hours of driving, after which it gets hot. When it starts to get hot, I just put the heat on inside my car and it cools back off. It’s like it intermittently has enough coolant and then it doesn’t. I dunno man, it’s confusing the hell out of me

Try the fixes over here, which include checking the fan, the fan relay and the temperature switch. Why is my Sportage still overheating?