2017 Dodge Journey 109K miles keeps overheating been to Dodge dealership 4 times started when heater line blew and been happening every since, replaced lines, thermostats and thermostat housing but still can’t find the issue, recently blew coolant out of reservoir temp hit 248*
What makes this problem better or worse?
Worse when it’s hot outside
How long has your 2017 Dodge Journey had this problem?
RepairPal Certified shops can diagnose and repair your 2017 Dodge Journey. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, Dave here, contributing to RepairPal and providing expert advice since 2010.
You did not mention the cooling fans - are they working as designed? Have they been inspected?
Overheating is not terribly complicated.
The cooling system requires flow - water pump moving coolant, pressurized system with no leaks, a radiator without restrictions, a cooling fan that works when needed, a thermostat that opens and closes at then right times. Beyond those areas, the engine internally must have no breach of the cooling system to the combustion chamber - such as when a cylinder head gasket fails.
It's quite basic - and if you need help, definitely reach out to a shop near you for diagnostic testing.
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