Sutliff Posted June 24, 2013 Report Share Posted June 24, 2013 As some may have read or been following, I have had problems with voltage drop after new Rockford amplifiers & Fi subs install, as well as a new MechMan 170A alt offering. Just this past week I purchased a new XS Power D3400 & redid the GNDs on my Big 3 --- went from 4awg to 1/0. Some of the problem(s) STILL exists. With the urging of a very educated friend, I decided to take some voltage measurement after the car had been resting after running for around an hour.. At rest, with the car NOT running, the BATT was 13.1v. That voltage carried through the 1st breaker, & at the rear terminals the voltage was 13.0v. Same 13.0v at the amps directly. Next, ... time to bump some music pretty good - let us say 80% of my max that I would ever bother playing it ... certainly enough that the lights have dimmed, & the volt gauge has "danced" around before. With the Rockford T500-bdCP pounding, the BATT's lowest reading was 12.6v. The rear terminal's lowest were 11.9v, & the lowest reading I got was obviously on the T500, & that was 11.8v. The car was NEVER running at any time. I was given the advice to take a very close look at my alternator. Concur? Zeke '14 2003 Chevy Monte Carlo SS Vehicle Details & Mod List: http://www.stevemeadedesigns.com/board/garage/vehicle/1703-chevrolet-monte-carlo-ss/ Audio Build Log: http://www.stevemeadedesigns.com/board/topic/143276-2003-chevy-monte-carlo-ss-audio-build-ib-build Pioneer FH-P8000BT Infinity Kappa Perfect 6.1 Fi IB3 (Two 12", 2-ohm SVC) RF T400-2 & T500-1bdCP MechMan S Series 240A XS Power D3400 & D975 Link to comment Share on other sites More sharing options...
Mikesmith0890 Posted June 24, 2013 Report Share Posted June 24, 2013 Your alternator is not going to supply any power with the vehicle off, so how do any of these measurements point in any way towards fault of the alternator? AlphaDamp Sound Deadening CDL Mat - The best Vibration Damper Ever! I'd hit that so fucking hard whoever pulled me out would be King of England. Lol... looks like we were on the same page. Car-B-Ques suck.ya, tires and paint burning make the marshmallows taste funny. Link to comment Share on other sites More sharing options...
Lbox88 Posted June 24, 2013 Report Share Posted June 24, 2013 With the car running, what is your voltage from alt plus to alt frame? What is your voltage at battery plus to frame? 13.1V is a good resting voltage. UBL | Build Log Link to comment Share on other sites More sharing options...
CNF Kevosinn Posted June 24, 2013 Report Share Posted June 24, 2013 wait so your dropping voltage with the car not running (alternator is not on or charging) and you think its the alt? correct me if im wrong but thats how I understood it *** SuperSeller Status Verified *** ( http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers/ ) "kevosinn's" astro van 8 custom Sundown Zv4 18's 4 Sundown scv 6000's CNF Distribution CNC parts Skyhigh wire some batteries SMD Meters and tools used on the installhttp://www.stevemeadedesigns.com/board/topic/172877-kevosinns-vanwest-coast-skyhigh-car-audio-vehicle/ 16,000 watt walled silverado build.http://www.stevemeadedesigns.com/board/topic/161965-walled-silverado-4-hdc4-15s-4-crescendo-3500s-and-much-more/ 8,000 watt 1999 Subaru legacy outback. Build log here: http://www.stevemead...ru/page__st__60TEAM CNF Distribution Link to comment Share on other sites More sharing options...
Bmike Posted June 24, 2013 Report Share Posted June 24, 2013 lollolol, alt isnt gonna work unless the vehicles running.. 2007 trailblazer lthead unit- pioneer p4300dvd crescendo ft-1 supertweeters pioneer m650 pros audiocontrol 2xs crossover Rockford fosgate p200-2 highsrockford fosgate p400-2 mids1- fi btl 18amps- saz 3500battery- evermax in front, 2 9a31 dekas in rearwires all knuconceptz 1/0 and rcas Link to comment Share on other sites More sharing options...
Chris Hammer Posted June 24, 2013 Report Share Posted June 24, 2013 Yeah wth....are you trolling. Your car is not running,,,,alternator is not turning...no turning means no charging so how the hell does that point at your alt....EVERYONE will have voltage drop just running on batteries only. When your car is running what is voltage?...alt off does NOT matter. and whoever told you to test your alt with car off, or said its the alt when you have good resting voltage and bumping with car off is someone you SHOULD NOT listen too ever agian about audio. MY BUILD *****http://tinyurl.com/gmcbuild***** Vehicles 2005 GMC Canyon CB1000r - Currently where any future funds are going. (exhasut,bazzaz, ohlins shock, screen, etc.) crf250r - Used to be race bike..now I just trail ride..practice at the track on it. CH80 - Daily beater (when nice weather)best 150$ ever spent. 100+mpg Sold to: Skullz - pstone11 - Leo1103 - Volvo 63' - pavelpardo - imnew59585 Shower farts still piss me off.I think theyre pretty neat. When the water runs down your crack as you let one out... its like shitting in a crockpot. Link to comment Share on other sites More sharing options...
Trey_Dog650 Posted June 24, 2013 Report Share Posted June 24, 2013 Fucking lol 13 Kia Forte Build! 07 Hyundai Accent Build ***Super Seller*** N8ball2013 And then he gets to say ok all you guys were right. im sorry for being a dummy poo poo head. Link to comment Share on other sites More sharing options...
tacomaguy1 Posted June 24, 2013 Report Share Posted June 24, 2013 Lulz Team Flex Issues Link to comment Share on other sites More sharing options...
Sutliff Posted June 24, 2013 Author Report Share Posted June 24, 2013 Other things that have been changed check out fine. And I am not trolling. Zeke '14 2003 Chevy Monte Carlo SS Vehicle Details & Mod List: http://www.stevemeadedesigns.com/board/garage/vehicle/1703-chevrolet-monte-carlo-ss/ Audio Build Log: http://www.stevemeadedesigns.com/board/topic/143276-2003-chevy-monte-carlo-ss-audio-build-ib-build Pioneer FH-P8000BT Infinity Kappa Perfect 6.1 Fi IB3 (Two 12", 2-ohm SVC) RF T400-2 & T500-1bdCP MechMan S Series 240A XS Power D3400 & D975 Link to comment Share on other sites More sharing options...
Lbox88 Posted June 24, 2013 Report Share Posted June 24, 2013 Then why the fuck are you asking about voltage issues with your alt when you're not even testing with the car running? UBL | Build Log Link to comment Share on other sites More sharing options...
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