C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Mar 13, 2012 | 06:27 PM
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my alternator is starting to go, it isnt keeping up with the power consumption when I have the headlights on and rear defrost on. My question is should I rebuild the alternator or replace it alltogether???
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Old Mar 13, 2012 | 07:24 PM
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That's up to you. The alternator is one of the simplest engine accessories to rebuild. It helps to have a small press for install/removal of bearings and diodes...but it's not absolutely necessary.

The other choice is to have a starter/alternator/motor repair shop rebuild yours, if you want to keep the same housing (date codes). They are usually less expensive than buying a rebuilt unit; and they are usually more reliable with their builds.
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Old Mar 13, 2012 | 07:30 PM
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I think I would like to have it rebuilt, especially if it might be a little cheaper and you say both options are legitimate. Anyone know of a good place in the Pensacola, Fl area?
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Old Mar 13, 2012 | 08:18 PM
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normally we can or you can have the alternator rebuilt using the same case with a higher output so the car physically by appearance remains stock looking...we have done that many times
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Old Mar 14, 2012 | 01:28 AM
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Just check the Yellow Pages for "Starter Repair" or "Alternator Repair". Some motor repair shops do them, too.
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Old Mar 14, 2012 | 10:32 AM
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Originally Posted by pleasants9
my alternator is starting to go...
Are you sure the battery is not the problem?
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Old Mar 14, 2012 | 10:44 AM
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Can you change your oil or remove a tire?

If so you can rebuild a older GM Alt. First thing I ever did was rebuild the Alt in my 1985 Firebird. I could not change the oil but I could rebuild the alt.

Basic tools and a paperclip.
Not including the bearings, but a basic press will take care of that. Even a c-clamp could work if you set it up right.
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Old Mar 19, 2012 | 07:02 PM
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Well I don't think I took the cheapest route but I am still happy with my decision. The local alternator shop actually picked up the alternator from my place after I took it out of the car and rebuilt it the next day for me to pick up. Unfortunately someone before me had already replaced the alternator and with the wrong one at that. So the guy replaced all the electrical components in my burnt out one, apparently the back casing was 90 degrees off so he fixed that, polished up the casing, painted the cooling fan and replaced the pulley. $129.00 later here it is.

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