The temperature gauge is going up and down.
Hello. If the coolant temperature gauge is constantly fluctuating then the most common cause of this is a bad thermostat. If the thermostat is sticking or not opening and closing right then this will occur. It can also be a clog in the radiator or a water pump problem. If the engine has never gotten too hot then the thermostat should be replaced first. If the problem persists then the engine should have a block test and then the coolant needs to be checked to make sure it is flowing. If it is not then the water pump may be bad.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing