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Old 09-10-2017
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MightyMouse  MightyMouse is offline
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Originally Posted by blownjk View Post
On the 3.6's the alternator output is controlled by the PCM.
There is a table in the software for it.
Output is regulated versus battery temp not ambient temp.
As the battery gets hotter, charge voltage is lowered...
That's not what a so called "smart alternator" does...... they actually shut down periodically and the vehicle runs on the battery. Also the battery charge level can vary significantly from traditional charging systems which always aim for a full charge. As you can imagine this can cause issues with second battery systems so its a topic of some importance with some vehicles when fitting second batteries.
It seemed like a good idea at the time........