Jesseland Posted October 9, 2011 Report Share Posted October 9, 2011 (edited) Hey guys, i know im new but i never post here cause whenever i need to know something i just search these forums and find an answer, but i cant find one for this issue. So i have all stock electrical (Minus a 2nd batt in the trunk) In a 2010 Civic. And for my newest system i finally got a digital voltmeter in the dash. And i didn't notice it the first few days, mainly cause i wasnt looking at it i assume. But lately when driving it will drop from 14.3ish to 12.3ish for no reason, music on or off. Like today and yesterday i was idling testing my new box/sub and everything. It was all running fine at 14v, i turned the stereo off and drove away, and as soon as i accelerated a little it dropped from 14v to 12v for no reason. I pull over again it stays at 12v, i accelerate and sometimes it jumps right back to 14, and others it stays at 12 till i stop again. Weird Then later ill start my car, starts at 14, drive (with no music) and drops down to low 12's again. Driving around town it decides what it wants to do, at 12 or 14, jumps back and forth ( again with no music) but on highway it seems to like 14v i noticed. Im not sure if some of the diodes are burnt up in my stock alt (70 or 80 amp btw) or 1 of the 2 batterys are having probs. But i did do some research and found something called ELD circuit, which hondas have to regulate the voltage. Not sure what this is, if i have to bypass it or what. Any and all input would be appreciated! Thanks guys. Edited October 9, 2011 by Jesseland Quote Amp: Kicker ZX1000.1 Sub: 1 AudioQue HDC315 Box: 3.6cf @ 34hz 2nd Batt: Shuriken BT-35 Link to comment Share on other sites More sharing options...
AdamTheAudioMan Posted October 9, 2011 Report Share Posted October 9, 2011 (edited) Got any belt slipping? Edited October 9, 2011 by AdamTheAudioMan Quote UNDER-CONSTRUCTION ''Old School Build'' maybe it sounds like an 18 cause theres 3 fucking "port" holes ghetto drilled in the "box" 190 db when your done? Yea that's the lowest decibal ill be satisfied with when I'm done like I said its stage one and I lost my job u guys should consider shit instead of just talk it lmao Link to comment Share on other sites More sharing options...
Jesseland Posted October 9, 2011 Author Report Share Posted October 9, 2011 Got any belt slipping? I dont think so, i checked it out and it seems fine. Got 22k miles on the belt. Not sure when i need to replace those tho haha Quote Amp: Kicker ZX1000.1 Sub: 1 AudioQue HDC315 Box: 3.6cf @ 34hz 2nd Batt: Shuriken BT-35 Link to comment Share on other sites More sharing options...
OrionStang Posted October 9, 2011 Report Share Posted October 9, 2011 Did you mess with the alt wires when you added the second battery? Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
Stephen Posted October 9, 2011 Report Share Posted October 9, 2011 This is normal for newer hondas. it is done to save fuel. Quote you can cook bacon shirtless if you're not a pussy...lol not hatin, but am i wrong here it looks as if the amp is not grounded its hooked directly to the battery. it that the way it should be. DC POWER Link to comment Share on other sites More sharing options...
CaPRiCEx383 Posted October 9, 2011 Report Share Posted October 9, 2011 same thing happens in my honda, I turn on the headlights and it goes back to normal. Quote 90 Nissan 240sx Avic z-140bh Audison SR4 Audison Voce 6.5s CDT es-20 tweeters Sundown 1500v3 (2) DD 9510's 3 cube box 2 6" aeros XS Power D2400 & Xp950 Skyhigh/Knukonceptz/Rockford Fosgate wiring More Coming Soon.. Check my builds below. 97 Civic Hatch Build 86 Caprice Build you can pick up a chick in a car... I think it'd be hard to roll up mackin on a broad sittin on a sundown. My opinion Link to comment Share on other sites More sharing options...
Jesseland Posted October 9, 2011 Author Report Share Posted October 9, 2011 Did you mess with the alt wires when you added the second battery? Nope, just ran 4AWG from the 1st batt's + post to the back. This is normal for newer hondas. it is done to save fuel. Is there anyways to bypass it? Would big 3 help at all?(Im assuming not tho) Quote Amp: Kicker ZX1000.1 Sub: 1 AudioQue HDC315 Box: 3.6cf @ 34hz 2nd Batt: Shuriken BT-35 Link to comment Share on other sites More sharing options...
Stephen Posted October 9, 2011 Report Share Posted October 9, 2011 The computer instructs the alternator to drop from 14.5 volts to 12.5 (ie. not charging the battery) when all of the following are true: - Load below 10A - Speed below 40 MPH - Engine speed below 3600 RPM - Coolant temp above 140 F - A/C off - Intake air temp above 65 F - Brake switch off - Fuel cut-off not active turn your AC on Quote you can cook bacon shirtless if you're not a pussy...lol not hatin, but am i wrong here it looks as if the amp is not grounded its hooked directly to the battery. it that the way it should be. DC POWER Link to comment Share on other sites More sharing options...
OrionStang Posted October 9, 2011 Report Share Posted October 9, 2011 Little off topic, but how does less voltage save fuel? Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
fox_racin4 Posted October 9, 2011 Report Share Posted October 9, 2011 Less strain on the alt. easier to.turn the alt with no load Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
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