Engine - Intermittent Miss On Acceleration

86ford16 Article No. 86-11 -23


NO START - INTERMITTENT, AND CFI - LOOSE CONNECTION AT FUEL PUMP


MISS ON ACCELERATION - EFI AND CFI - LOOSE CONNECTION AT FUEL PUMP

FORD 1983-85 LTD

LINCOLN-MERCURY 1983-85 MARQUIS

LIGHT TRUCK 1985-86 BRONCO, BRONCO II, RANGER, F-SERIES, ECONOLINE; 1986 AEROSTAR

Loose wire terminals at the spade connectors on the rail mounted fuel pump motor can result in low voltage (below 8.5 volts) and fuel starvation. If the fuel pump is inoperative or the drive concern is intermittent, check the connections before replacing the pump assembly.



Procedure
1. Disconnect the fuel pump wiring harness connector (attached to the pump bracket). See Figure 16.
2. Attach continuity tester leads to the two terminals in the pump motor harness connector. Push and pull lightly on connectors located under rubber boots and observe tester for opens or intermittent continuity.

3. If tester indicates continuity is good, use fuel pump diagnostic procedure in Section 24-35 of the appropriate Shop Manual.

4. If circuit is open or intermittent, roll back boots and check/reconnect wire terminals to pump terminals. Recheck connections with tester.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions ofthe Warranty and Policy Manual.
OPERATION: SP9307A86
TIME: 0.3 Hr. DLR. CODING: Basic Part No. 9H307 - Code: N2 or P2