Engine - No Start Condition

Article No.
92-26-8

December 16, 1992

^ NO START - 4.9L, 5.0L, 5.8L, 7.5L - FROM CORRODED OR LOOSE WIRE SPLICE IN 12A581 WIRING ASSEMBLY

^ WIRING - 12A581 WIRING ASSEMBLY - CORRODED OR LOOSE WIRE SPLICE RESULTING IN POSSIBLE NO START



LIGHT TRUCK:
1987-90 BRONCO, F-150-350 SERIES



ISSUE:
A no start condition may be caused by loose or corroded three-way wire splice in the # 37 circuit of the 12A581 wiring assembly.

ACTION:
Repair the corroded or loose wire splice by using the following service procedure.


1. Disconnect the negative battery cable from the battery.





2. Locate the fuel pump relay, Figure 1.

3. Trace the # 37 circuit wire (yellow) from the fuel pump relay into the 12A581 wire harness.

4. Carefully cut away enough harness wrap to expose the splice (about 4 or 5 inches).

5. Examine the splice. If loose or corroded, repair as follows:

a. Cut out the bad section.

b. Reconnect the wires together.



c. Solder the wires with resin core electrical solder.

6. Use heat shrink tubing (WT5625) to insulate the splice. Tape (EOAZ-19628-A) and put back into the harness.

7. Reconnect the negative battery cable.

8. Test the vehicle for proper operation.





Part Number/Name Chart

OTHER APPLICABLE ARTICLES:
NONE

WARRANTY STATUS:
Eligible Under Basic Warranty Coverage

OPERATION DESCRIPTION TIME
922608A Inspect And Repair Splice 0.5 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
12A581 84

OASIS CODES:
203200, 603300