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help with alts and voltage!


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Posted

whatsup guys. i have a triple mechman 340 alt setup with external regulator in my 2001 tahoe. im in the process of a complete rebuild of a bunch of stuff inside the truck, but when i hooked back up my xs d3100 under the hood my voltage only goes to about 12.8 no matter what. i turned the knob on the external regulator and the voltage dont move. prior to removing everything from inside the truck i disconnected the front batt and then proceeded to remove everything. now i hooked up the front back a week later and it wont go past 12.8 also the regulator box is seeing power. and one more thing, out of my three alts one is really hot one is warm enough so i can hold my hand on it without moving and the third one is the least warm. please any help is appreciated thankyou.

Posted

the only other thing that i might add is i dont have the other 2 d3100s hooked up in the back like i had prior to ripping out everything. didnt think it would make a difference but ill try hook them up tomorro.

Posted

Your batteries discharged, by chance?

Does the voltage go up if you rev the car?

Posted

come to think about it these batts got drained pretty bad before but i stuck them on a xs charger for awhile and then straight into my truck and it was running perfectly for months so maybe they did get drained. but whats up with the 3 alts being 3 different temps?

Posted

And that probably means that the other alts aren't hooked up.

I don't know much about multi-alt setups though

Posted

Sounds like a bad batt to me...and the temp diffrence..is the hottest one closest to the engine??

1999 grand prix gt

kenwood x994 head unit

1/0 big 3 all shok industry single run to the back

New mid/highs coming not sure what

Soundqubed q2200d at .5 (have)

2 soundqubed hdc3 12s (have)

New box to be built.. sealed firing forward (yet to be designed)

200 amp alt not sure exact size or manufactor xs power batts

Posted

at the moment the voltage with the car off is high 11s just a few weeks ago when i had my full setup in it was like 12.7 off and 14.4 to 14.6 when driving around which is what i dont get. i never changed anything with the alts or batts, just took out the 2 in the back and had the one under my hood disconnected maybe a lil bit longer then a week. yea this is my first multi alt setup too.

Posted

Sounds like a bad batt to me...and the temp diffrence..is the hottest one closest to the engine??

yea im starting to think that too. and the one closest to the block is the coldest. the ones up top are the warm and really hot one.

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