no, it shouldn't go above half for your engine to be safe. If its a new car, and in warranty then i guess nothing can be done, as pak suzuki does not really do anything.. however, if its not under warranty, get your ac fan directly connected (means running all the time when car is start), put coolant in radiator.. and if still not resolved, get a mint conditioned twin lines radiator of some other car from bilal gunj which can fit in your car, and it'll stop heating.....!!