been searching, reading and searching some more.

working at a european car shop, not much of a merc guy, more of an Audi/vw rat.

info, 1984 380SE sedan. intermittently stalls, will NOT restart without waiting a while. ordered overload and fuel pump relays. performed a crap-load of service work too. IE: belts, hoses, tranny hoses @ radiator, new radiator ect ect..... fuel filter previously replaced by someone else along with fuel pump and fuel presure regulator behind distributor head.

replaced BOTH overload AND fuel pump relays, dead on the rack. starts until key is released from start position and pumps shut off. jumper pins 7&8 and it purrs like a kitten. diagram reads "solid state" inside fuel pump relay, pulled old one apart and insides are cooked in a few spots, swapped back to old one, still dead. what does this relay need for signal to make it work? IE: what signal is not strong enough or is breaking up that i need to rectify the situation?

thanks!
-Zac