That’s usually caused by insufficient air passing through the radiator core. Check the core to make sure it isn’t clogged with bugs, and make sure there’s nothing in front of the radiator that might be cutting the airflow, such as a bullbar, driving lights, or other gear that guys sometimes mount in front of the grille.

THE Courier is fundamentally sound, so you should concentrate on things such as condition, odometer reading, and signs of bush bashing or having been crashed.