Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1987 Ford Bronco II 4WD V6-177 2.9LFACTORY OEM SERVICE PROCEDURE
Fuel Tank Sending Unit - Connector Replacement
89Ford21
FUEL SYSTEM-FUEL TANK SENDING UNIT-WIRE HARNESS CONNECTOR REPLACEMENT
WIRING-FUEL TANK SENDING UNIT-CONNECTOR REPLACEMENT
Article No. 89-14-6
FORD: 1985-89 CROWN VICTORIA, ESCORT 1985-88 EXP 1985-89 MUSTANG, TEMPO, THUNDERBIRD 1986-89 TAURUS
LINCOLN-MERCURY: 1985-89 CONTINENTAL, COUGAR, GRAND MARQUIS 1985-87 LYNX 1985-89 MARK VII, TOPAZ, TOWN CAR 1986-89 SABLE
LIGHT TRUCK: 1985-89 BRONCO II, ECONOLINE, F-150, F-250, F-350, RANGER
Figure 1:
ISSUE: Damaged fuel tank sending unit connectors can be serviced by splicing in a new wire harness connector. The new connector can be obtained by ordering the fuel tank sending unit wire harness and cutting off the connector.
ACTION: Splice the new fuel tank sending unit connector to the existing wire harness. Refer to the following procedure for service details.
1. Disconnect the battery ground.
2. Cut the connector from the new harness.
3. Leave 6-8 inches of wiring lead on the connector.
4. Remove the old connector from the fuel tank sending unit.
5. Cut the connector off the vehicle's wire harness about 6-8 inches from the old connector.
6. Match the wire colors.
7. Install the new connector. Use a "Duraseal" butt splice connector, Figure 1.
8. Using a heat gun, seal the splice.
CAUTION: DO NOT USE AN OPEN FLAME.
9. Connect the battery ground.
10. Check the operation of the fuel gauge.
PART NUMBER PART NAME CLASS
E9FZ-9A400-A Wire Harness - Fuel Pump C
OTHER APPLICABLE ARTICLES: 86-3-11
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 2300, 2310, 2400, 2770, 4500
Factory Service Tools
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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.
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