Yes check your cooling fan, probably its gone or have a bad fuse or relay, it make sense :)
You may have an engine cooling fan that isn't working. When you run the heater you are removing some heat from the cooling system which aids in keeping the engine cool. If the cooling fan in front of the radiator isn't working then the engine can overheat at slower speeds when there isn't any air being forced through the radiator by the forward motion of the vehicle. If this problem is happening only at slow speeds then I would suspect a cooling fan BUT if it happens at steady speeds over 35 mph you may have a different problem.Hope this helps and good luck!
SOURCE: when we turn on our heater on the temp is fine but
CHANGE THE THERMOSTATE IT,S STICKING IT WILL NOT OPEN WHEN TURN THE CAR ON IT SENDS THE HEAT DIRCT TO THE INSIDE OF THE CAR FROM THE ENGINE AND THAT MAKES THE CAR GET LESS OUT AND WHEN YOU TURN IT OFF ALL THE PRESSURE GOES THE THE ENGINE AND MAKES IT RUN HOT
227 views
Usually answered in minutes!
×