The fuel relays can be repaired if you are astute with a soldering iron.
Open the relay, look for a broken connection in the PC board. it will be obvious to you. It is usually right along the bottom edge. Resolder the break. VIOLA!
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.