bigmizzle99 Posted October 8, 2016 Report Share Posted October 8, 2016 (edited) I bought a brand new XS D3400 from droppinhz. It measured 12.71V when I got it. Put it in the car. Still 12.71V. The first few days seemed awesome, voltage was always in the 14s when driving. I thought to mysekf, awesome, this is what it's like to have good voltage However, a week later, and my voltage now measured 12.4V today while driving. WHY????? I thought the AGM would hold charge longer, recharge faster, and provide me the amps necessary for audio. I don't have any audio connected yet, and it's disappointing. I'm charging the battery right now and the voltage is coming up. Am I doing something wrong? Edited October 8, 2016 by bigmizzle99 Quote Camaro SS Build Altima build 2.0 Altima build 1.0 Link to comment Share on other sites More sharing options...
dolarbilz Posted October 8, 2016 Report Share Posted October 8, 2016 It's at 12.4 while driving? What kind of vehicle Quote Link to comment Share on other sites More sharing options...
bigmizzle99 Posted October 8, 2016 Author Report Share Posted October 8, 2016 2014 camaro ss Quote Camaro SS Build Altima build 2.0 Altima build 1.0 Link to comment Share on other sites More sharing options...
dolarbilz Posted October 8, 2016 Report Share Posted October 8, 2016 Double check your connection, make sure your getting full contact on terminals, make sure you didn't leave a wire off as well 1 Quote Link to comment Share on other sites More sharing options...
dolarbilz Posted October 8, 2016 Report Share Posted October 8, 2016 2014 camaro ss is it pcm controlled? Quote Link to comment Share on other sites More sharing options...
bigmizzle99 Posted October 8, 2016 Author Report Share Posted October 8, 2016 Likely...seems all cars have pcm controlled charging. Quote Camaro SS Build Altima build 2.0 Altima build 1.0 Link to comment Share on other sites More sharing options...
bigmizzle99 Posted October 8, 2016 Author Report Share Posted October 8, 2016 Double check your connection, make sure your getting full contact on terminals, make sure you didn't leave a wire off as well No wires left off, it's just positive and negative leads. Everything is right. Quote Camaro SS Build Altima build 2.0 Altima build 1.0 Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted October 8, 2016 Report Share Posted October 8, 2016 Ah the pcm knows what's best. Lol Quote 91 C350 Centurion conversion ( Four Door One Ton Bronco) 250A Alternator (Second Alternator Coming Soon) G65 AGM Up Front / Two G31 AGM in Back Pioneer 80PRS CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon) Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon) Link to comment Share on other sites More sharing options...
Karkov Posted October 15, 2016 Report Share Posted October 15, 2016 pcm does that to save gas mileage or some shit from the factory Quote 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
Ninja_v1.0 Posted November 8, 2016 Report Share Posted November 8, 2016 that does not seem right at all even for a pcm controlled car. Are you sure your alternator is working properly? Can you measure voltage at the alt? 2 Quote When your at the top everyone is coming for you, friends, family, haters and even those who don't know you.. my advice.. KILL EM ALL Link to comment Share on other sites More sharing options...
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