nick93

I have a 1993 Ford F 150 with a 4.9 inline 6 the truck runs but when I am driving in the electrical system seems to cut out and everything still works but it will cut in and out when I am driving when I go over bumps it does the same I don't know what it's doing or why it's doing it it seems to be something with the voltage regulator I'm not sure but if anyone has had this problem before please let me know and how you fixed it thank you

Chris_1

iTrader: (1)

Sounds like you have a loose connection. Go over all your connections, make sure all the plugs are tight and all the wires look good. Clean up anything that looks grungy like your battery/starter connections etc.
Don't forget to check/clean up and tighten the grounds. They're just as important as the power side connections.

joshtowal

There's an old TSB out for the alternator connector. Check yours for any melting. This is the new part # they recommend.

E5AZ-14305-AA Generator wiring Harness Connector Kit

I got mine from rockauto for less than $10. They don't show one for our trucks for some reason, but if you do a google search for that part number, I think the part comes up under a 1985 Mark VI or something along those lines.

fltdriver

X2 on grounds, never seen that TSB but sounds logical, had a little S-10 that loved to have electrical issues with bumps. Took me a few weeks but I finally cleaned and tightened every ground and terminal and no more issues.

joshtowal

Article No.
96-21-4

10/07/96

^ CHARGING - GENERATOR DISCHARGE - LOOSE OR WEAK CONTACT AT GENERATOR HARNESS CONNECTOR

^ WIRING - GENERATOR HARNESS CONNECTOR DAMAGE - LOOSE OR WEAK CONTACT

FORD:
1985-90 ESCORT, TEMPO 1986 TAURUS
1986-90 CROWN VICTORIA
1987-92 THUNDERBIRD
1987-93 MUSTANG

LINCOLN-MERCURY:
1985-87 LYNX
1985-90 TOPAZ
1986 SABLE
1986-90 GRAND MARQUIS, TOWN CAR
1987-92 COUGAR

LIGHT TRUCK:
1985-90 BRONCO II
1985-91 AEROSTAR
1986-91 ECONOLINE
1986-92 RANGER
1986-93 BRONCO
1986-94 F-150-350 SERIES

This TSB is being republished in its entirety to update the Service Procedure outlined in the Action.

ISSUE:
When a generator fails, there are a few failure modes that may cause heat to be produced at the wiring harness-to-generator connector. This excess heat may damage the female terminals on the wiring harness, resulting in increased resistance. The increased resistance produces more heat. When the generator is replaced, the resistance produced by a damaged connector may damage the new generator and could result in a repeat repair, including installation of another generator. High resistance (caused by a damaged connector) will not go away until the damaged connector is replaced.

ACTION:
Visually inspect the harness-to-generator connector for damage (heat, corrosion, distortion and cracking) before installing a new generator. Install the Generator Wiring Harness Connector Kit (E5AZ-14305-AA) if the harness-to-generator connector is damaged.

The Generator Wiring Harness Connector Kit (E5AZ-14305-AA) contains the following:

^ One (1) Red Wire Butt Connector
^ Two (2) Yellow Wire Butt Connectors
^ One (1) Wire Connector Assembly
^ One (1) Instruction Sheet (I.S. 6849)

PART NUMBER PART NAME

E5AZ-14305-AA Generator wiring Harness Connector Kit

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 95-25-4

WARRANTY STATUS: INFORMATION ONLY

OASIS CODES: 203000, 203100, 203200, 206000