battery/alternator issue
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Freshman User
Joined: Mar 2004
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From: Woodbridge, Virginia
battery/alternator issue
1992 F 150 8 cyl....wouldn't start and no lights,etc.....tested battery where I bought it and they said ok. Replaced alternator and it started. Week later battery light on again and won't start so took battery back again....bad...they replaced it for free (not even near its expiration date) but battery light still on. There is very little magnetism on new alternator. What is going on? This is getting ridiculous.
tbenton
tbenton
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Joined: Apr 2001
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From: Glen Burnie Maryland
Did you replace the four lead plug on the bottom of the alternator? You could have a shorted plug (been known to happen as they get very hot). Most of the rebuilds I've seen at the auto store recommend this plug be replaced when changing the alternator.
The battery light being on indicates that one or more of the diodes in the rectifier bridge went south.
Change the alternator and the plug.
Just rebuilt mine for $38.00. The diodes burned out so I replaced the Voltage Regulator and H.D. Rectifier. The Generator shop even threw in heat sink grease (Must have for electronics now adays.) Brushes were fine. Took about an hour total time, not including the 20 minutes I spent going to and from the shop.
Puts out 87AMPS.
Larry
The battery light being on indicates that one or more of the diodes in the rectifier bridge went south.
Change the alternator and the plug.
Just rebuilt mine for $38.00. The diodes burned out so I replaced the Voltage Regulator and H.D. Rectifier. The Generator shop even threw in heat sink grease (Must have for electronics now adays.) Brushes were fine. Took about an hour total time, not including the 20 minutes I spent going to and from the shop.
Puts out 87AMPS.
Larry
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Freshman User
Joined: Mar 2004
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From: Woodbridge, Virginia
Thanks so much Larry,
No, he did not replace the plug. The alternator is DEAD today and its two weeks old. Not sure if its rebuilt but he is on his way to Advanced Auto with it in hand and a frown on his face. I just paged him to tell him about the plug. He just called me back and said there was a piece of paper with the new alternator that talked about the plug but of course he never read it when he replaced the alternator..well DUH! He wants to know if the plug is hard to get off? He is not bad with fixing cars but this is a new one for him. He has enough grief getting the serpentine off. His truck is his livelyhood as a carpenter so this is distressing.
Tried to email this to you but I have not been a member long enough...rats
Terri
No, he did not replace the plug. The alternator is DEAD today and its two weeks old. Not sure if its rebuilt but he is on his way to Advanced Auto with it in hand and a frown on his face. I just paged him to tell him about the plug. He just called me back and said there was a piece of paper with the new alternator that talked about the plug but of course he never read it when he replaced the alternator..well DUH! He wants to know if the plug is hard to get off? He is not bad with fixing cars but this is a new one for him. He has enough grief getting the serpentine off. His truck is his livelyhood as a carpenter so this is distressing.
Tried to email this to you but I have not been a member long enough...rats
Terri
Last edited by tbenton; Mar 10, 2004 at 07:55 AM.
Thread Starter
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Freshman User
Joined: Mar 2004
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From: Woodbridge, Virginia
Larry.
Got your email and thanks so much. Replied to you that he now has another new alternator (free) and the leads/plugs and hopefully all is well as I have not heard from him in a while. I love these web forums. People are so willing to help each other.
Terri
Got your email and thanks so much. Replied to you that he now has another new alternator (free) and the leads/plugs and hopefully all is well as I have not heard from him in a while. I love these web forums. People are so willing to help each other.
Terri
