voltage regulator

[Bernie Benz]

Normal at idle speed.
Go to the Bosch web site. Should be listed for stock alternator.


On Dec 6, 2010, at 10:38 AM, robert weinberg wrote:

> the volt meter on my car has usually been around 12.75 volts with  
> the lights off
> - but with the lights on, we are talking about less than 12.5 -  
> then when the
> aux fan kicks in while the lights are on, it sometimes dips for a  
> split second
> below 12 volts. the headlights dim and the engine rpms drop below  
> idle.
>
> i'm assuming this isn't normal ;-)
>
> question is this usually a symptom of a worn voltage regulator? or the
> alternator - i hope it's just the regulator.
>
> if so, which one is for my car - the 28mm or the 32mm? and has  
> anyone tried
> these units? my friend has one on his 4000q and says they work great -
> especially because they are adjustable:
>
>
> This is the 32mm one
>
> http://cgi.ebay.com/ebaymotors/Voltage-Regulator-Bosch-Alternator- 
> Audi-Mercedes-VW- 
> _W0QQcmdZViewItemQQhashZitem35ae444e15QQitemZ230556978709QQptZMotorsQ5 
> fCarQ5fTruckQ5fPartsQ5fAcce
>
>
> This is the 28mm one
>
> http://cgi.ebay.com/ebaymotors/Voltage-Regulator-Bosch-Audi-Porsche- 
> Mercedes-VW-73-93- 
> _W0QQcmdZViewItemQQhashZitem4cf37898a4QQitemZ330502281380QQptZMotorsQ5 
> fCarQ5fTruckQ5f
>
>
>
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