If they both went at the same time i'd be inclined to think it was a prablem with the connections into the dash or a fuse ect as opposed to the senders, if they went out one at a time, then senders.
dala, u cld be right if the clock is not wrking as well, but im still getting a clock display....it could be jst a coincident that the fuel and coolant temp send unit is faulty....