1995 Ford Mustang Alternator. And/or battery

Tiny
DONFAVIAN
  • MEMBER
  • 1995 FORD MUSTANG
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 150,000 MILES
First the battery light came on and the voltage indicator was in the low range. The alternator was also making a strange sound so I removed it and had it tested at a nearby Auto Zone, where it was diagnosed as needing to be replaced. I also had the battery checked and was told that the battery no longer can maintain a charge, so I replaced both. Initally the car quickly started up, but the battery light remained on and the voltage indicator remained in the low range. I checked all the connections on both the battery and alternator and everything seemed to be in order. However the battery quickly lost its charge and went dead within 10-15 minutes. I had to get a jump start to start it again. While doing this I noticed that the voltage indicator was in the normal (middle) range when I connected the jumper cables to the battery, but dropped backed down in the low range when I removed the cable. I don't understand what else it could be. Is it possible that the new alternator is not working properly? Could it be a short in the wiring? This problem just occupied within the last few days. What else can I do?
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Tuesday, August 25th, 2015 AT 4:18 PM

5 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
CHECK FUSES AND FUSIBLE LINKS!

MANY TIMES WHEN THIS HAPPENS THESE GET FRIED IF THE JUMPER CABLES GOT CROSSED UP (AT EITHER VEHICLE-EVEN FOR A SPLIT SECOND!). THIS MAY OR MAY NOT HAVE BEEN YOUR CASE.

SHOULD YOU NEED MORE HELP (AND I'M NOT DOIN' "HONEY DOs") I CAN TRY TO GET YOU A CHARGING SYSTEM WIRING DIAGRAM FROM "PRODEMAND"

THIS MIGHT SHOW EXACTLY WHAT FUSES AND FUSIBLE LINKS MIGHT BE INVOLVED AND MAYBE THEIR LOCATIONS

LET US KNOW WHAT YOU FIND

THE MEDIC
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Tuesday, August 25th, 2015 AT 4:54 PM
Tiny
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Thank you for your reply. I looked up the information concerning.G the fuse box and the location of which fuse I need to check.
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Wednesday, August 26th, 2015 AT 6:02 AM
Tiny
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I APPRECIATE THAT YOU RETURNED WITH AN UPDATE.

SO I RECKON ALL IS "GOOD TO GO"?

THE MEDIC
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Wednesday, August 26th, 2015 AT 6:04 PM
Tiny
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Thanks to your advise/suggestion, I checked the fuse for the alternator and found that it needed to be replaced and did so. As a result the the alternator gauge shows that it's operating in the normal range. Problem solved. Thank you for your help.
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Wednesday, August 26th, 2015 AT 6:21 PM
Tiny
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  • MECHANIC
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AIRBORNE!

THE MEDIC
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Wednesday, August 26th, 2015 AT 6:53 PM

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