Walt, I would have never guessed the fuel in the tank could reach 118 Degrees - that's almost unbelieveable. I would offer this guess: Make certain none of the fuel return lines are being "pre-heated" by the coolant lines. It seems to me this could would be a possibility of transferring heat, if a line were positioned too close or in the wrong place near a hot coolant line. That's my $0.02 Eric Dunedin, FL VIN# 5557 --- In dmcnews@xxxx, "Walter Coe" <Whalt@xxxx> wrote: > I'm still trying to find out how to keep my fuel pump > quiet after it gets hot. [moderator snip] > And the pump still makes noise when the fuel gets hot! > > I pulled the fuel sender and stuck a thermometer in there. > It read 118 degrees F! Can you believe the fuel got that > hot with about an hour's driving? [moderator snip]