Modifying Fuel Pump Relay

1986 Mercury Sable LS, 4D SedanSECTION Modifying Fuel Pump Relay
  1. Using new Fuel Pump Relay (E3EB-9345-BA,-CA,-DA or E3TF-9345-AA), drill 1/8" (3.2 mm) hole in side of relay skirt. Hole should be in-line with row of 3 pins and as close to base of relay as possible. Part of relay skirt may be cut away to provide easier access to pins.
  2. Solder 16-18 gauge jumper wire between pin Nos. 2 and 4. Feed 1 end of 8-10 ft. flexible wire through hole drilled in relay skirt and solder to pin No. 1. Leads should be soldered as close to relay base as possible to permit insertion of relay into socket with minimum interference. Solder alligator clip to other end of 8-10 ft. flexible wire.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.