89- 740 GL wagon I recently had my fuel sending unit replaced and now once I fill the tank the gas gauge takes a good 45 minutes of steady driving to reach full. Also I seem to only be able to use half a tank of gas once the gauge reads empty the tank is still half full but the car stalls as if the tank is empty. I know the tank is only half empty because it only costs to fill it up. Is the new sending unit faulty or does it just need to be repositioned in the tank? Thanks in advance Rob