Closed Thread
Results 1 to 9 of 9

Reload Thread: where to start with voltage drops?

  1. #1
    GiganticPrune's Avatar
    GiganticPrune is offline Senior VIP Member



    Join Date
    Apr 2008
    Location
    Orland Park, il
    Posts
    399
    Post Thanks / Like
    Mentioned
    0 Post(s)

    where to start with voltage drops?

    so in my wrx, i have a yellowtop to replace the stock battery under the hood, a kinetik 1400 in the trunk, a 185 amp alt (does i think 160 at idle) and big 3 done.

    now i used the yellowtop from my previous car, its about 2 years old. i bought the alt used, and i bought the kinetik used from a guy running 2 zx2500.1's off of stock alt and like 3 batteries.

    i have my zx2500.1 running at 2 ohms, but i get really really bad voltage drops. where do i start in finding out where my problem is? bad batteries? bad alt?

    now when i was hooking up my HO alt, the manufacturer (powermaster) says to hook this random wire up to a 12 volt ignition on source, i was a bit lazy and just hooked it up straight to the battery. i drive all the time so i wasnt concerned of it draining the batteries...



    2006 stage 2 wrx.
    eclipse cd5000
    mtx ta3404
    polk momo front components
    mtx audio rears
    sundown 3500d
    3 mach 5 audio ixl10.2.2s

    refs: rowdyt, bigredhybrid, robinson,jerry, cslother, patfitz9




  2. #2
    dman4486's Avatar
    dman4486 is offline Paid to Post



    Join Date
    Jan 2008
    Location
    Central, SC
    Posts
    9,321
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    let the vehicle sit overnight and see what the resting voltage is on them. I think your laziness may have the alt doing extra duty every day to try and recharge the batts.



    Auto: 96 honda passport 3.2L v6 4X4 5sp
    Big 3 pics--THE MAV--THE RSD's--MY VLX
    Rices Creek Pics

    Refs: Sold to; lilmaniac2, alexdbest2000, jshak07 Bought from; CJL

  3. #3
    GiganticPrune's Avatar
    GiganticPrune is offline Senior VIP Member

    Threadstarter


    Join Date
    Apr 2008
    Location
    Orland Park, il
    Posts
    399
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    so i tested this morning after letting it sit overnight. the yellow top in the front read 12.2, the kinetik in the back read 12.65.

    so..is that telling me anythign?



    2006 stage 2 wrx.
    eclipse cd5000
    mtx ta3404
    polk momo front components
    mtx audio rears
    sundown 3500d
    3 mach 5 audio ixl10.2.2s

    refs: rowdyt, bigredhybrid, robinson,jerry, cslother, patfitz9

  4. #4
    audiolife's Avatar
    audiolife is offline WhAt?



    Join Date
    Feb 2002
    Location
    indiana
    Age
    43
    Posts
    14,372
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    if the batteries are taking a charge they would rest at around 12.8 volts



    Sony Mobile ES C-90 Audison Bit-One
    Audison LRx 3.1 MT
    Hertz HSK 130
    Mid Bass ?
    DB Drive K5 15
    Kinetik 1400HC
    avital 2200 alarm
    dynamat extreme

  5. #5
    GiganticPrune's Avatar
    GiganticPrune is offline Senior VIP Member

    Threadstarter


    Join Date
    Apr 2008
    Location
    Orland Park, il
    Posts
    399
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    So basically my alt is straining to charge 2 bad batteries? Grr.



    2006 stage 2 wrx.
    eclipse cd5000
    mtx ta3404
    polk momo front components
    mtx audio rears
    sundown 3500d
    3 mach 5 audio ixl10.2.2s

    refs: rowdyt, bigredhybrid, robinson,jerry, cslother, patfitz9

  6. #6
    audiolife's Avatar
    audiolife is offline WhAt?



    Join Date
    Feb 2002
    Location
    indiana
    Age
    43
    Posts
    14,372
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    Quote Originally Posted by GiganticPrune View Post
    So basically my alt is straining to charge 2 bad batteries? Grr.
    sounds like its not charging anything....



    Sony Mobile ES C-90 Audison Bit-One
    Audison LRx 3.1 MT
    Hertz HSK 130
    Mid Bass ?
    DB Drive K5 15
    Kinetik 1400HC
    avital 2200 alarm
    dynamat extreme

  7. #7
    GiganticPrune's Avatar
    GiganticPrune is offline Senior VIP Member

    Threadstarter


    Join Date
    Apr 2008
    Location
    Orland Park, il
    Posts
    399
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    So....does that seem like the alternator or the batteries are to blame?



    2006 stage 2 wrx.
    eclipse cd5000
    mtx ta3404
    polk momo front components
    mtx audio rears
    sundown 3500d
    3 mach 5 audio ixl10.2.2s

    refs: rowdyt, bigredhybrid, robinson,jerry, cslother, patfitz9

  8. #8
    DBBOOM's Avatar
    DBBOOM is offline DWN4MYN



    Join Date
    Oct 2008
    Location
    eastcoast
    Posts
    3,630
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    Quote Originally Posted by GiganticPrune View Post

    now when i was hooking up my HO alt, the manufacturer (powermaster) says to hook this random wire up to a 12 volt ignition on source, i was a bit lazy and just hooked it up straight to the battery. i drive all the time so i wasnt concerned of it draining the batteries...
    So you have the exciter-circuit wire hooked up constant. The wire is supposed to be connected through a switched 12v source.



    Natural selection at work.

  9. #9
    GiganticPrune's Avatar
    GiganticPrune is offline Senior VIP Member

    Threadstarter


    Join Date
    Apr 2008
    Location
    Orland Park, il
    Posts
    399
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: where to start with voltage drops?

    So you think that is making a huge difference?

    That was gonna be my next step after making sure my grounds were as clean as they could be



    2006 stage 2 wrx.
    eclipse cd5000
    mtx ta3404
    polk momo front components
    mtx audio rears
    sundown 3500d
    3 mach 5 audio ixl10.2.2s

    refs: rowdyt, bigredhybrid, robinson,jerry, cslother, patfitz9

Closed Thread

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts

1e2 Forum