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Old 12-05-2005, 12:30 PM   #1
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Join Date: Jun 2005
Location: NJ
Posts: 21
My Ride: 1999 323i / E46
voltage regulator HOW-TO? anyone done it?

looking to replace the voltage regulator module on my 1999 e46 323i sedan.
anyone done this?

from http://www.realoem.com/bmw/ ...
VOLTAGE REGULATOR BOSCH 1 12311713491 $111.32

jim / wrooster

my symptom is a very slight dimming of headlights when driving. car starts fine, just this morning it was about 20'F outside and no problem getting going.
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Old 12-05-2005, 05:33 PM   #2
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Join Date: Jul 2003
Location: OCCal;BACal
Posts: 651
My Ride: 00 323//65 Fastback
The regulator is on the alternator. Most of the time if the regulator is bad, it would over charge. You can simply check the voltage by attaching a voltmeter to the battery while the car is running. Reading 14v-15v would good. Below 12v, not good. 18v, not good either.

The alternator is held by two bolts, I believe one of them is at the idle pulley. Have not done it, but heard it's not that differcult.
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