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  #1  
Old 28th February 2007
dashpot dashpot is offline
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Join Date: Sep 2006                                                
Location: Ohio
My Saabs: 97' 9000 Aero
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Default sharp voltage drops while driving

After searching through the expansive list of electrical issue threads, I could not locate any that describe my issue. So here goes.....

While driving on the freeway at a constant speed, I will feel a slight jolt and everthing (headlights, dash, etc...) dims for a split second, and the voltage drops from 14.2ish to around 12ish. The voltage then rises back to 14.2 again. This happens about once every minute or so. No warning lights have come on during this. Anyone have similar issues? I was thinking about getting a new voltage regulator, but don't want to waste the money if it is not the issue....
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  #2  
Old 28th February 2007
abusot abusot is offline
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I had the same problem. On the pos battery terminal, there is a smaller, but still thick red wire that connects to a junction box on the battery tray. The connection corrodes, causing the blip. Clean and grease the connection and you should be ok.

Also check connection at main ground.
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  #3  
Old 28th February 2007
dashpot dashpot is offline
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Join Date: Sep 2006                                                
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Thanks for the reply! I will give it a try on Friday and post with the results.
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