I have just replaced the fuel pump in my '95 945T. I have brought the car back to the mechanic assuming the sender was messed up because the low level light came on early (240 mi instead of 340 mi), and when I filled the tank, it filled up w/ only 14 gallons, instead of the usuall 18(it's a 19+ gallon tank). Well, after draining the tank w/ the light on, only 2 gals came out, and once again it filled at 14 gallons. Now I believe it must be some kind of venting problem. Any ideas?