My brother’s Ford Fiesta keeps overheating, but there’s no heat in the cabin or radiator. We have changed the following: heater matrix, expansion tank and cap, radiator, water pump, thermostat twice (now running without).

However, the following is evident: radiator top hose hot, radiator cold, bottom hose cold, heater matrix pipes both hot but one a little cooler than the other, matrix cold, radiator fan working ok.

The car is otherwise in good condition, but we can’t solve the overheating problem. You’re now our last hope!