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Bad alternator?

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#1 Z71Silverado



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Posted 18 September 2012 - 10:32 PM

Hey. I have a high output 250 amp alternator on my truck. It is about 4 years old. Earlier today I went to start my truck and the screen said battery not charging. So I went and took a hammer to the back of the alternator. It's now working again. Should I be buying a new alternator tomorrow?


#2 Carder


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Posted 19 September 2012 - 06:27 AM

Yes or you can keep hammering it.

Main ride: 2013 Vee-Dub GTI


Other ride: 1994 atoyoT MR2 Jap Spec G-Limited

#3 ujtruck



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Posted 19 September 2012 - 07:18 AM

check Alt cables 1st, make sure they are tight, your alternator not really bad, however it has some internal or external loose connection


#4 Gurrzt



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Posted 19 September 2012 - 07:56 AM

Your "brushes", or whatever makes the connection to the revolving part of the alternator is worn out.

#5 Duelin



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Posted 19 September 2012 - 08:50 AM

Do you have any automotive electrical repair shops in your area? And do they rebuild alternators? If so take it to them and have them do a quick check. Could be a brush sticking or something else simple. I have a couple of shops in my area and have been doing business with them for years. When i have a problem with a alternator or starter I take it to them. No use rebuilding the whole alternator if nothing is wrong with 90% of it. Brushes gone replace them. Bearing gone replace it. etc. etc.

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