Mechanics

ALTERNATOR NOT CHARGING

2003 Ford Ranger • 85,000 miles

I replaced the alternator, cleaned all ground wires, ran a ground directly from the battery to one of the alternator bolts. Check all fuses. Replaced pcm relay. Still will not charge. I had the old alternator tested on it was bad. In so much it was throwing sparks at times while being tested. I have had the new alternator tested twice and it passed both tests.
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Bell1614
July 22, 2013.




IT'S EITHER A BAD CONNECTION. OR A COMPONENT IN THIS DIAGRAM FROM "MITCHELL I" ("CHARGING SYSTEM")

I'M SORTA BETTING ON A FUSIBLE LINK

WHATCHU THINK?

THE MEDIC


Tiny
CJ MEDEVAC
Jul 22, 2013.
I checked the voltage @ the battery and it ws the same on the hot wire at the alternator so, I wouldn't think it would be the fuseable link. Do you?


Tiny
Bell1614
Jul 22, 2013.
. WELL.

WE CAN SORTA BACK UP!

I'M NOT FAMILIAR WITH YOUR TRUCK 1ST HAND

DID YOU HAVE THE BATTERY "FULLY" TESTED AT THE AUTO PARTS STORE. NOT JUST CHECK VOLTAGE WITH A VOLTMETER

YOU ARE CHECKING VOLTAGE AT THE BATTERY. NOT RUNNING, AND THEN RUNNING. WITH A VOLTMETER?

I BEEN A-LOOKIN' OVER THE DIAGRAM

YOU ARE CORRECT (I THINK) VOLTAGE AT THE BATTERY IS THE SAME AT THE ALTERNATOR. MEANING THERE IS NOT A BREAK BETWEEN THEM BOTH

LOOKS TO BE 3 OF THEM FUSIBLE LINKS IN THE DIAGRAM

. RECKON ONE OF THEM IS BETWEEN BATTERY VOLTAGE. AND THE "FIELD"

WITHOUT THE FIELD BEING "ENERGIZED" YOU HAVE AN EGGBEATER INSTEAD OF A "GENERATOR"

CAN YOU TEST FOR VOLTAGE WITH THE KEY ON. ON EITHER SIDE OF THE 3 LINKS?

EVEN FASTER. YOU CAN USE A 12 VOLT TEST LIGHT AND MAYBE "STAB" INTO THE WIRE ON EITHER SIDE OF 'EM!

I TRY TO MAKE THIS KINDA FUN!

LEMME KNOW HOW YOU COME OUT

THE MEDIC
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Tiny
CJ MEDEVAC
Jul 23, 2013.
Yes I had the battery tested twice and it passed with flying colors. I noticed the same thing that you noticed that there are 3 fusable links so, I'm gonna break out the light tester and hopefully find the problem. I really appreciate all your helpful advice and if you have any more suggestions please feel free to let me know. I can use all the help I can get. Lol thanks again. I will keep you posted.


Tiny
Bell1614
Jul 23, 2013.
ROGER

WAITIN' ON GOOD NEWS

THE MEDIC


Tiny
CJ MEDEVAC
Jul 23, 2013.
Thank you. It's my dad's truck and I'll be headed out there tomorrow to do the testing.


Tiny
Bell1614
Jul 23, 2013.
. ANY NEWS?

THE MEDIC


Tiny
CJ MEDEVAC
Jul 25, 2013.

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