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DiscoWeb Bulletin Board » Message Archives » 2002 Archives - Technical » Discovery » What kind of electrical problem is this? HELP « Previous Next »

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Scene from Poltergeist - Gauges going wacko!Todd McArtor08-01-02  11:08 am
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Chris Welch (Asigiam)
Posted on Sunday, July 14, 2002 - 10:09 pm:   Edit Post Delete Post Print Post

I just had the alternator changed when it went bad last week. Tonight I noticed that the cabin lights, dash lights, and head lights pulsate at a steady pace with the engine. Even the windows sound like the pulse when rolled up or down. Is it the alternator again, or did they mess something up?
 

Erik G. Burrows (Erik)
Posted on Monday, July 15, 2002 - 11:50 am:   Edit Post Delete Post Print Post

Well, since no one else responded: That sounds like the alternator to me. It's either giving dirty power, or far to little. However, if you changed anything else, think about that. These symptoms also look like a very large power draw. (I wonder what would happen if the starter didn't dis-engage properly? Perhaps it would become a bad generator.)
 

muskyman
Posted on Monday, July 15, 2002 - 12:16 pm:   Edit Post Delete Post Print Post

sounds like a voltage regulator problem...its job is to maintain constant voltage despite rpm changes...when they go bad the lights and things follow engine rpm /electrical output instead of being constant.

might have got a bad one in the new alternator
 

Germ�n R. Gr�ner (Germán)
Posted on Monday, July 15, 2002 - 12:54 pm:   Edit Post Delete Post Print Post

If lights PULSATE i´m afraid that some diodes inside from the alternator are blowed up.
This occurs when there are interruptions in the power output connection. Check alternator and battery connections.
Good luck
 

Chris Welch (Asigiam)
Posted on Monday, July 15, 2002 - 04:00 pm:   Edit Post Delete Post Print Post

Thanks, I'm taking it back to the dealer so they can fix it right this time. Atleast is covered under warranty, and I don't have to pay at all on this since it's their mess up. Thanks for the help guys.

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