anti.commander Posted November 4, 2008 Report Share Posted November 4, 2008 The other day i noticed that when my window is all the way down and i push the down button again my voltage gauge drops considerably, if i were to have my lights on and both front windows down and push the down buttons simultaniousley the voltage drops low enough for my head unit to turn off. I have a battery under the hood and one in the back and im powering one fi bl 18 on a power acoustik ov1-3000D i just replaced my alternator when the stock 90 amp went dead, i bought the new one from napa and its 130 amps and everything was running just fine until the other day when i noticed these problems. any suggestions of what the hell could be wrong here? Quote Link to comment Share on other sites More sharing options...
Got_Bass89 Posted November 4, 2008 Report Share Posted November 4, 2008 Nothings wrong thats normal... Never herd of HU turning off but big voltage drop yes... So just don't do it lol.. Quote Passport Build Here Alarm: Prestige APS997A 2-Way/Remote Start HeadUnit: Pioneer DEH-P6000UB Front Battery: Yellowtop Optima D34/78 Back Battery: 2x C&D Technologies High Rate Series UPS12-475FR 134AH Subs: 2x DC Lv4XL 18's Amps: 2x Sundown Saz1500's Strapped Box: 12Cubes 33hz 185sqin Port(15.4sqin per cube) Pillars: AudioBahn AS31Q Front Doors: Clif Designs TX40.5 Back Doors: Clif Designs CD50.4C Rear Speakers: Clif Designs TX46.5 Front/Rear Amp: Kicker ZX350.4 Back/Pillars Amp: Kicker ZX200.2(Looking for another zx350.4) Electrical: 1/0 Scorpion Wire 2 Runs Pos and 2Runs Ground, Knu 1/0 Flex Running to Amps ect, Big 3, JL 8Ga For Speaker Wire, Knu Karma RCA's, Scorpion Volt Meter Deadener: 100 sqft Sound Destroyer Mat And SECOND SKIN Damplifier Pro Door Pack Link to comment Share on other sites More sharing options...
Noobtastic14 Posted November 4, 2008 Report Share Posted November 4, 2008 take a volt meter and get some numbers. -Drew Quote I am a United States Military Arts and Crafts Professional. Sand it off, Paint it on. uhoh_45 said: dont be a pussy P give the jeep to drew Link to comment Share on other sites More sharing options...
loganberry Posted November 4, 2008 Report Share Posted November 4, 2008 fine does it too, but then again only when i do all 6 windows, but it just drops low not shut anything off Quote My F-150 Build GET ON THE BANDWAGON what if they tried messing with the amps when the subs werent louder hahah jk Link to comment Share on other sites More sharing options...
anti.commander Posted November 4, 2008 Author Report Share Posted November 4, 2008 i dont think this drop is very normal when i do both the windows along with the lights the meter drops from the middle (the safe zone between High and Low) to about 1/7 of a "tank" I'll try and remember to pull some numbers Quote Link to comment Share on other sites More sharing options...
anti.commander Posted November 4, 2008 Author Report Share Posted November 4, 2008 (edited) and now i deffineintly know that this is not normal On my way back from school i had my stereo up and what not, playin a lil streetlight manifesto, and i turned my signal on to merge, when i did that my headunit shut off and then came back on again. So i decided to see if it would happen again, so i turned on my signal, sure enough the head unit turned back off. i turned my lights one, same thing, head unit turned off. I was listening to music that isnt bassy at all and this stuff still happens. The only thing i can think of is either my alternator is goin bad, which i just replaced not too long ago, or my battery is goin bad, but i can still start my car with just the battery under the hood and the one in the back isnt even a year old. any ides of what the hell is going on here? Edited November 4, 2008 by anti.commander Quote Link to comment Share on other sites More sharing options...
tequila Posted November 4, 2008 Report Share Posted November 4, 2008 possibly a bad head unit wire-up? my voltgauge goes from regular 14.4v to 13.8 when i do the window down thing. So thats normal, I guess. Quote '99 Civic hatch 18" AA Chaos - 7cuft @ 34hz - 114sq in. port Mac Audio Fearless ~ 1000wrms @ 2 Ohms Videos: Youtube Link to comment Share on other sites More sharing options...
raytard Posted November 4, 2008 Report Share Posted November 4, 2008 bad ground or power line for h/u?, try running a test line out the car direct to the batt, and same with the ground, just use like 14g speaker line, and see what happens, if it stops, its just a shitty something in the stock harness. Quote Build: http://www.stevemeadedesigns.com/board/ind...hl=avalon+build monster/rockford/kicker/stinger cables, pioneer source, jbl highs/amps, kinetik/shuriken batts, iraggi alt, dei security, dc subs(atleast for now) Team DC Link to comment Share on other sites More sharing options...
anti.commander Posted November 4, 2008 Author Report Share Posted November 4, 2008 i dont think its just the headunit though, thats just the most noticable side effect. when i do the window thing my lights dim like non other and the voltage gauge drops. i i were to do all four windows at the same time i come close to killing the car. Quote Link to comment Share on other sites More sharing options...
anti.commander Posted November 5, 2008 Author Report Share Posted November 5, 2008 i took some voltage readings. at the alternator 14.03 volts battery under the hood car running 11.5x volts battery in back car running 11.4x volts battery under hood car off 12.01 volts battery in back car off 12.00 volts So apparently my alternator is fine. ANY and all help is greatly appreciated Quote Link to comment Share on other sites More sharing options...
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