Some of you have brought up some good points. After filling my tank today at one of the newer Amoco stations in town, I started hearing a screeching sound that I thought before was my a/c blower. This time it lasted long enough that I was able to switch of the a/c and still hear it. So it wasn't the a/c blower. I figure the only things left are the radiator fans and the fuel pump. I suppose it is the fuel pump, and this one was from PJ Grady and has only a few thousand miles on it. I'm going to check my fuel pressures and check the flow through the return line. I didn't think to try that before. For David T, > 1) You are in a hot climate Yes, very. > 2) there is a problem with the pressure regulator set too high causing > the fuel to heat up as it circulates in the system. I'll check that. Good idea. > 3) when the tank is low the fuel will get hotter as there is less fuel > to dissipate the heat into. Yes, but it can still get noisy at 1/2 a tank. > 4) air leak in the pick-up hose. Not likely because I still have symptoms while the whole hose is submerged in fuel. For Eric P., Remember that both the supply & return coolant lines pass under the fuel tank. In fact, the tank has indentations on either side for the coolant pipes to fit. This is probably one of the more significant sources of heat in the fuel. I'm thinking about replacing the sections of aluminum pipe here with long pieces of silicone radiator hose just for general principles. I don't like my fuel being 118F even if it doesn't make my pump noisy. Even if I do have a restriction causing heat build-up, changing the aluminum to silicone is probably a good idea anyway. For John H, Except for the recent screeching sounds, this pump is as noisy as the one that came with the car. So I suspect that the problem isn't the pump and more than likely just hot fuel for whatever reason. You live in a hotter climate than I do, so have you noticed noisy pumps with hot fuel? Walt Tampa, FL