my fiat punto needed topping up with water, this I did but noticed water was pouring out from under the car.My heater is also not working .Could this be a water pump problem? If so, what kind of cost are we looking at to repair please?
Check the hoses first as they can split and perish. This is easy and cheap to repair. If it's not the hoses could be a holed radiator or worse the heater matrix. Without water in the cooling system, the heater will not work.