Question about 1993 Ford Tempo
Basically the easiest way for you would be to test your voltage when vehicle is off & record it. Shut all accessories off, Now start the vehicle & check voltage while running, it should come to say 13.5 approx. which would indicate that it is charging. One other thing I'd be tempted to try, is hook test light to good ground & then touch negative terminal while it's off the battery, just to make sure there isn't a wiring mix-up sending current back to negative. If light lights up, somehow power is getting fed back through ground, time to look for that source. Do it with key on & off just to be sure. Don't you just love it when someone plays with wiring and you need to figure out what the heck they did?
Posted on Jan 01, 2009
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Posted on Jan 02, 2017
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There is a Ford Technical Service Bulletin and Ford Repair Harness Connector Kit that may be your problem.
^ 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
1986-90 CROWN VICTORIA
1987-93 MUSTANG LINCOLN-MERCURY:
1986-90 GRAND MARQUIS, TOWN CAR
1987-92 COUGAR LIGHT TRUCK:
1985-90 BRONCO II
1986-94 F-150-350 SERIES
This TSB is being republished in its entirety to update the Service Procedure outlined in the Action.
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 **** Connector ^ Two (2) Yellow Wire **** 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
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