I have a 3f-se. Is it possible to open, clean, and re-attach the wires for the voltage regulator adaptor plug that plugs into the alternator? Pictures included. And how so? Thanks. So I'm suspecting my issue has to do something with this connection, but at this point it is only suspicion. My issue is this... On a cold start, the alternator is not sending enough charge back to the battery. The volt meter reads about 11.4 volts. But after 2 to 5 minutes, it kicks in and sends the correct voltage, 13.5-14.5 volts. Important note: The alternator is brand new, or one month old. I called the auto store and they're willing to exchange the alternator with a new one (eventhough the current one passes the machine tests), but they recommended that i check my wiring first, which makes sense to me too. So this leads me to this voltage reg adaptor plug. it does look like one of the wires is hanging on by only a few copper threads. Another question if I may, where do the voltage reg wires go to? Thanks again.
I thought that these alternators had a build in voltage regulator...Am I wrong in assuming this or do I not understand the question?
Yes, I believe that is correct, the voltage regulator is built inside. I assumed that this plug, plugged into the voltage regulator, but I wasnt sure of that either. i should mention that i am a novice at car repair. Thanks for the clarification.
Check all the engine grounds and the resistance in them. I would also check the continuity of your wiring to the alternator. Sounds like it is a wiring issue if the alternator is new...HOWEVER, I have had alternators pass the bench test but still didn't work on the car. Also check your battery cables. if corroded or green replace.
Thanks Scott for the posts and advice. An update... So yes, after checking the wiring as best as I could, I asked myself, "Could it be the new alternator?". So I went back to the auto store and exchanged for another new one. Sure enough, issue resolved. So, it's interesting you had the same experience of the alt passing in the store but not in the car. Nonetheless, great relief, and again thanks much for your spot-on advice. Cheers!