Water temperature gauge fluctuates even after replacing the thermostat
My car has 310000 miles.
My car has an automatic transmission.
Hello, thank you for asking about your 2003 Honda Element. This can be many different things aside from the thermostat, such as a failing water pump, a failing coolant fan relay, a clogged radiator, or even potentially a blown head gasket. I would recommend having an expert from YourMechanic come to your home to perform a cooling system service.