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T77911S T77911S is offline
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Join Date: Oct 2006
Location: MYR S.C.
Posts: 13,546
the neg cable being hot would be a sign of high resistance or a LOT of current draw.
the fuel pumps pull about 7 amps each which does stress the single fuse but is not a problem for the relays. (thats the purpose of relays. provide high current loads with power without going thru switches. also provide a short cabling path to the load, usually).
the contacts could be corroded on the relays and pulling thme out sort of cleaned them.

i would also check the fuel pump fuse. clean the fuse ends and the contacts. remove the wires at the fuse block and clean the wire ends along with the screw ends.

best thing to do is the fuse mod. it adds another fuse so each fuel pump is no its own fuse and relay. i did it by utalizing the fog light fuse since i dont have any. you cant tell its been done just by looking, keeps it original looking.
86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ SOLD
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
Old 12-22-2014, 04:26 AM
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