You probably shorted the fuel pump and blew the fuel pump relay.
It is a big black box inside the fuse box. Check your fuses while you are there but it is probably the relay.
By the way, make sure that when you replaced the fuel pump that you put back the seal ring(s). You should not have to tighten that bolt so hard.
1985 500SEL (260,000 miles) SOLD!
1974 280 SOLD!
1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled)
"I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls.