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Reload Thread: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

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    QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    I've got an H.O. alt + optima under hood, Plus Deka G31 in back. I'm runnin only my 4ch. amp right now, and when I turn the volume up to about 30%... my voltage drops right away for some reason!!!
    ***I just had this same system in my car about 2 weeks ago.. ripped it out, and now putting it back in

    This is all with the car on, radio on easy listening level THIS IS WITH OUT MY SUB AMP!!

    Under hood voltage car on: 14.15. I started car, took - off, car stayed on

    Deka voltage: 14.08

    Amp Voltage: 14.04-05

    I will turn the radio up about 2-3 volume, and the voltage drops, and the amp (alpine) will cut out and read (CUR)
    Both main fuses appear to be good...

    Both my grounds are solid... one bolted under hood, one bolted to seatbelt bolt?????????????????????????????????????????????? ?????????????????????????????????????????????????? ?????????????????????????

    You tell me. only thing I can think of is
    A. Fuse behind the radio is ALMOST blown???



    Refs: Projectpat, XylerB, decipha, blados, protonman, Wlmrs, Nucleareskimo, gl0ck, mobeious, JBizzle (picked up box) mlstrass (box design) Mazzasec (bought 18" RD Alpha from him) SKMFKR: Traded subs Wrenchguy: Sold 18" Q to him. psychoacoustics: bought some bullet horn tweets from him Shinju: bought some 0awg wire from him. Sold a box and 18" HDC318 to chitown_impala. Bought my 2 custom 15's from 99Vic on steave meade forum. NJTStang11- picked up 18" SSX and box from him krispy cream SCAMMED ME $200!!!





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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    is there any way to test a fuse on both ends to see if the proper amount of current is passing though?? while the fuse is still hooked up



    Refs: Projectpat, XylerB, decipha, blados, protonman, Wlmrs, Nucleareskimo, gl0ck, mobeious, JBizzle (picked up box) mlstrass (box design) Mazzasec (bought 18" RD Alpha from him) SKMFKR: Traded subs Wrenchguy: Sold 18" Q to him. psychoacoustics: bought some bullet horn tweets from him Shinju: bought some 0awg wire from him. Sold a box and 18" HDC318 to chitown_impala. Bought my 2 custom 15's from 99Vic on steave meade forum. NJTStang11- picked up 18" SSX and box from him krispy cream SCAMMED ME $200!!!





    2 Pistol Shrimps in a 4.0 cu^ft box tuned to 32 hz for the WIN !!

    "You can't compare, don't stare, cause I got the ultimate Mary Jane"

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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    ttt??



    Refs: Projectpat, XylerB, decipha, blados, protonman, Wlmrs, Nucleareskimo, gl0ck, mobeious, JBizzle (picked up box) mlstrass (box design) Mazzasec (bought 18" RD Alpha from him) SKMFKR: Traded subs Wrenchguy: Sold 18" Q to him. psychoacoustics: bought some bullet horn tweets from him Shinju: bought some 0awg wire from him. Sold a box and 18" HDC318 to chitown_impala. Bought my 2 custom 15's from 99Vic on steave meade forum. NJTStang11- picked up 18" SSX and box from him krispy cream SCAMMED ME $200!!!





    2 Pistol Shrimps in a 4.0 cu^ft box tuned to 32 hz for the WIN !!

    "You can't compare, don't stare, cause I got the ultimate Mary Jane"

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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    How low is the voltage dipping?




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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    it was going down to 13.5, then it would cut out

    BUT I GOT IT!!!... for whatever reason.. I disconnected one of the tweeters, and switched the polarity, and now it works fine!!!.. I wonder if there was a tiny strand of wire touching the "other" terminal or somethin...???



    Refs: Projectpat, XylerB, decipha, blados, protonman, Wlmrs, Nucleareskimo, gl0ck, mobeious, JBizzle (picked up box) mlstrass (box design) Mazzasec (bought 18" RD Alpha from him) SKMFKR: Traded subs Wrenchguy: Sold 18" Q to him. psychoacoustics: bought some bullet horn tweets from him Shinju: bought some 0awg wire from him. Sold a box and 18" HDC318 to chitown_impala. Bought my 2 custom 15's from 99Vic on steave meade forum. NJTStang11- picked up 18" SSX and box from him krispy cream SCAMMED ME $200!!!





    2 Pistol Shrimps in a 4.0 cu^ft box tuned to 32 hz for the WIN !!

    "You can't compare, don't stare, cause I got the ultimate Mary Jane"

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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    BIGG ISSUE...

    Im waiting for someone to help me out here though PM, but here's what the new issue is

    I've been having some voltage issues, and i've about given up here...

    Apparently for the last few months, my voltage has been dropping down to about 12.5 on the big notes, and I didnt even know this because my amp with the V. indicator light is in the trunk, and I just re-located it to the back seat....Light's don't dim up to i'd say 90% volume. then i get a LITTLE dimming

    I have 180A alt, Big 2 done (no block to GND yet..someone cut it)
    Bluetop under hood
    DekaG31 in back,
    just re-grinded all GNDS, all are/were good,
    tried pulling speakers to see if there was a short or something, didnt change
    Voltage rests at 14.2 car on..
    Batts hold 12.9 car off
    Tried disconnecting the - terminal on batt. to check alt, car stays on
    so im down to the conclusion this ALT. is a piece of ****...

    ANY---other ideas would be GREAT!!



    Refs: Projectpat, XylerB, decipha, blados, protonman, Wlmrs, Nucleareskimo, gl0ck, mobeious, JBizzle (picked up box) mlstrass (box design) Mazzasec (bought 18" RD Alpha from him) SKMFKR: Traded subs Wrenchguy: Sold 18" Q to him. psychoacoustics: bought some bullet horn tweets from him Shinju: bought some 0awg wire from him. Sold a box and 18" HDC318 to chitown_impala. Bought my 2 custom 15's from 99Vic on steave meade forum. NJTStang11- picked up 18" SSX and box from him krispy cream SCAMMED ME $200!!!





    2 Pistol Shrimps in a 4.0 cu^ft box tuned to 32 hz for the WIN !!

    "You can't compare, don't stare, cause I got the ultimate Mary Jane"

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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    ttt... could really use some help here



    Refs: Projectpat, XylerB, decipha, blados, protonman, Wlmrs, Nucleareskimo, gl0ck, mobeious, JBizzle (picked up box) mlstrass (box design) Mazzasec (bought 18" RD Alpha from him) SKMFKR: Traded subs Wrenchguy: Sold 18" Q to him. psychoacoustics: bought some bullet horn tweets from him Shinju: bought some 0awg wire from him. Sold a box and 18" HDC318 to chitown_impala. Bought my 2 custom 15's from 99Vic on steave meade forum. NJTStang11- picked up 18" SSX and box from him krispy cream SCAMMED ME $200!!!





    2 Pistol Shrimps in a 4.0 cu^ft box tuned to 32 hz for the WIN !!

    "You can't compare, don't stare, cause I got the ultimate Mary Jane"

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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    if you have h/o alt why is your car on no amps on voltage only 14.08...shouldnt it be 14.4....sounds to me like alt is shot....TIME FOR NEW ALT




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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    Quote Originally Posted by cj407 View Post
    if you have h/o alt why is your car on no amps on voltage only 14.08...shouldnt it be 14.4....sounds to me like alt is shot....TIME FOR NEW ALT


    OMG, your alternator is only charging to 14.1V and not 14.4V, you need a new one!!!!!!!



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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    Quote Originally Posted by cj407 View Post
    if you have h/o alt why is your car on no amps on voltage only 14.08...shouldnt it be 14.4....sounds to me like alt is shot....TIME FOR NEW ALT
    wow....just wow.



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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    so then bball what could be his problem since he's having such a voltage drop with only a 4 channel operating?




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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    **** my lil honda crx stock alt keeps both my batteries at 13 full tilt...14.3 with car on and no amps on...thats out of a 60 amp max alt...so tell me how his 180 amp isnt keeping up with only 2 batteries...??? someone can answer that one?




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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    Quote Originally Posted by cj407 View Post
    so then bball what could be his problem since he's having such a voltage drop with only a 4 channel operating?
    If his amps are still grounded to the seat belt bolt it may be a horrible ground. Even if he sanded it down well, he may need to ground to the frame or to the front battery. That's the only thing I can think of.



    bought from: cbrrocketrdr, bk12321, galacticmonkey, jnoel, aaronmiiller, revrider1, QtrHorse, brchd, Calikid, IA2, miker, dontknowanythin, Towncar, woofercooker, speedyg76, cd6551
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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    Quote Originally Posted by cj407 View Post
    **** my lil honda crx stock alt keeps both my batteries at 13 full tilt...14.3 with car on and no amps on...thats out of a 60 amp max alt...so tell me how his 180 amp isnt keeping up with only 2 batteries...??? someone can answer that one?
    Some (crappy) HO alts do not charge at all at idle, only after you get the RPMs up a little bit, so that could be the problem as well.



    bought from: cbrrocketrdr, bk12321, galacticmonkey, jnoel, aaronmiiller, revrider1, QtrHorse, brchd, Calikid, IA2, miker, dontknowanythin, Towncar, woofercooker, speedyg76, cd6551
    traded with: lorilee8284, Boominator
    sold to:ravens9322, Blinkdogo2, dbubble, Fusion_FREAK, oneill584, jrgreene1968

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    Re: QUICK voltage drop with little power!! WTF!?!?! HELP PLEASE

    My vote goes to seatbelt ground, car body/frame work best




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