charging system

[fordkid]

Hey guys, Just baught a 86 5.0 GT. when I baught it the alternator was bad so I replaced it. just after replacing the alternator the battery registerd 12.6 with the car off, and 14 volts with the engine running. after driving it around for a few weeks, the battery went dead. the engine wouldn't even stay running after I jumped started it when I removed the jumper cables. as soon a I would remove the cables, maybe 3 or 4 seconds after the engine would die. I charged the battery it's holding a charge. so now the car starts on its own and stays running but I am reading 11.67 volts with the engine running, if I disconnect the top wire connector of the Alternator the voltage doesn't change. I can't get to the bottum wire connector without taking the alternator out. but it is connected firmly to the alternator. My question is, Is it the altinator. if how do I trace what caused it to go bad so quickly or if it was simply a faulty alternator. and could it be anything else causing the voltage to drop so much.


Thanks
Ford Kid

 

[HISSIN50]

Have your new alt bench tested. If it was a parts store version, they often don't last all that long.

Otherwise, be sure the charge cable has full continuity (you didnt blow the circuit protection).

Good luck.

 

[P-Zero]

Have your new alt bench tested. If it was a parts store version, they often don't last all that long.

Otherwise, be sure the charge cable has full continuity (you didnt blow the circuit protection).

Good luck.

Hope its not the circuit protectors (fusible links). Theyre in line and youll actually have to cut and solder new ones in to place.
It sounds like this new alt took a dive and is not charging. LIke hissin said take it off have it tested, make them warranty it.
-P.

 

[fordkid]

Thanks Guys, I will take off the altinator and have the store that sold it to me bench test it. I'll let you guys know what happens.


thanks
Ford Kid