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Home >> Mercury >> 1987 >> Topaz LS, FWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Low Pressure CFI >> Testing >> Fuel Delivery System Test >> Fuel Pump Relay Modification - Tempo & Topaz

Fuel Pump Relay Modification - Tempo & Topaz

  1. New fuel pump relay must be modified to serve as aid in testing fuel delivery system on Tempo and Topaz models. Following Ford relays may be used: Part Numbers (E3EB-9345-BA, -CA, -DA or E3TF-9345-AA).
  2. Relay case skirt must be modified. Drill 1/8" hole through side of skirt in line with row of 3 terminals and as close as possible to base of relay. See Fig 1 . Cut away skirt at ends in order to gain greater access to terminals. Make up 16 or 18 gauge jumper wire to connect terminals No. 2 and 4 on relay.
  3. Solder wire ends to terminals as close to base of relay as possible so modified relay will fit into socket of board. Run 8-10' (2.4-3.0 m) of flexible wire to terminal No. 1 through hole drilled in relay skirt. Solder bare end of wire to terminal No. 1 and install alligator clip on opposite end for use as ground clip.
Fig 1: Fuel Pump Relay Modification Use this relay for fuel system pressure test on Tempo and Topaz models.
G5330