I have a 2013 Dodge Journey with the 4 cyl motor. I replaced the radiator hoses last week due to a leak. My family and I drove up to Minnesota this past weekend and had no problems on the way up but on the way back I noticed the coolant temp start to climb. If I turned the heat on the coolant temp would drop back to normal operating temp but if I shut the heat off the coolant temp would begin to start climbing up. Any help would be great, thank you.