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Message: <blockquote data-quote="Mat Dope" data-source="post: 2366141" data-attributes="member: 570242">i have an alterstart HO alt and at idle i get 14.1v with nothing running and then with my a/c on it goes down to 12.5 and stays there.  alterstart has proven to be useless by saying that is supposed to happen, and by saying if the battery doesnt die your fine. (of course im not running accessories so my battery wont die!)anyway i took the plug out of the back of the alt. and tested the alt again. i got 15-15.2volts! and the same with the a/c on it dipped for a second to like 14.5 and went back to 15v.my question is, is it safe to run my car without this plug in the alt.? even when i rev my engine to 2000rpms the voltage doesnt go higher.thanks</blockquote>

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