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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,893
Ckeck, clean, and/or replace both fuel pump relays up front, as well as the single fuel pump fuse connections (clean, re-torque the wire nuts).

Check the connection to the overboost switch. If in doubt, unplug it and ground it to take the sensor out of the equation.

Check/clean the infamous "yellow relay" in the rear fuse panel (for 1980, it may be a round black or red).

Finally, if you've got a Lambda control circuit, then under the drivers seat would be the circuit board and relays, etc. associated with it. One of those relays is the "overspeed" relay and a bad connection there can shut down your pumps.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 10-15-2010, 04:14 PM
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