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Old 01-24-2013, 06:53 AM
upallnight upallnight is offline
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Location: Crook County
Join Date: Nov 2012
Posts: 661
Mein Auto: BMW, Lotus, Porsche
Originally Posted by JNMNL52 View Post
Closing the loop on this issue for those following....... Today my new Valeo alternator and belts from max @ oembimmerparts were installed by my indy. This appears to have fixed the problem. The alternator charged 14v at engine start, no lights. The problem was either the alternator or the regulator. I put my money on the regulator as being the culprit. So this faulty alternator resulted in delayed charging during the first start of the day, occasional idiot lights on the dash and never threw a fault code that I could read on my Creader VI.

So at the end of the day it cost $419.00 for a new alternator, $34.00 for two new belts and $255.00 in labor totalling $708.00. Thanks to all who shared their advice and troubleshooting procedures.
You should buy a new regulator for the old alternator, replace the old regulator and take it into one of those auto stores that test an alternator for free if you bring it in. You can keep the old alternator as a spare or sell it to recover some of your money. It's not that hard to replace the voltage regulator and brush assembly once you have the alternator out of the car.
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