I would say waterpump aswell,
If it hasnt be changed previously it will be the plastic impeller version, what happens is over time the plastic becomes brittle and the fins break & detach from the spindle. Therefore the pump still spins the spindle but without the fins it cannot propel the water. When replacing, replace with the metal impeller version. Also a good chance for cambelt if it hasnt been done.
If it hasnt be changed previously it will be the plastic impeller version, what happens is over time the plastic becomes brittle and the fins break & detach from the spindle. Therefore the pump still spins the spindle but without the fins it cannot propel the water. When replacing, replace with the metal impeller version. Also a good chance for cambelt if it hasnt been done.