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67 alternator problems

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Old Oct 13, 2008 | 09:34 PM
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Default 67 alternator problems

What can cause a restored alternator to burn up.
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Old Oct 13, 2008 | 10:47 PM
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by burn I take it you mean waaay overheated:
bad bearing
bad regulator
high demand on insufficient wire diameter
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Old Oct 13, 2008 | 11:18 PM
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Burn up from overcharging because of a bad regulator. Should have blown some lights and 12 volt accessories or they were on the verge of being blown.
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Old Oct 14, 2008 | 07:25 PM
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Originally Posted by Nowhere Man
What can cause a restored alternator to burn up.
Bad battery (dead or shorted cell) - forces constant full output from the alternator, which will fry it. Alternators aren't designed to charge dead batteries - only to maintain them.
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Old Oct 14, 2008 | 09:02 PM
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the car has a new maintence free repro and is always on a battery tender. the pulley is free
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Old Oct 15, 2008 | 06:47 PM
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well........

IMO that leaves regulator or excessive demand on inadequate wire.

Has electrical equipment been added to the car - e.g. electric pump, fan, megawattstereo, 100wattalternator - without upgrade to the harness?
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Old Oct 15, 2008 | 06:59 PM
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the car is 100% bone stock NCRS top flight twice
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Old Oct 16, 2008 | 07:40 AM
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Please discribe "burn up". Is the unit getting too hot, making noise, smell bad or just stopped working?
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Old Oct 16, 2008 | 03:50 PM
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my dad and I was in the car going down the road and could smell a burning smell. like something electrical. pull over open the hood and the alternator was very hot to the tuch and the wiring that you can see throught the back was black. and when we shut the engine off you could see smoke coming off the alternator.
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Old Oct 16, 2008 | 04:21 PM
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Originally Posted by JohnZ
Bad battery (dead or shorted cell) - forces constant full output from the alternator, which will fry it. Alternators aren't designed to charge dead batteries - only to maintain them.
Exactly what caused my freshly rebuilt alt. to "burn up".
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Old Oct 17, 2008 | 01:11 AM
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Keith,

Have you checked the fusible links?

Tom M
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