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    cbuts's Avatar
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    Battery - Alternator HELP

    just installed my 275A singer alternator, took off the small pulley that came with it and used the bigger one that also came with it and my stock belt.

    install went fine, except my voltage isnt right.

    when im driving it reads 14.9, but when i stop at a light it goes straight to 13, and slowly decreases to about 12.4
    also when in park it sits around 13ish

    PLEASE HELP.

    battery is a new red top that i bought the other day, and it reads 12.7 when engine is off. light wasnt on before alternator upgrade, and new battery was put in prior with no problems

    vid of alternator running,seems to be very hot too
    https://www.dropbox.com/s/sx7bcxmxijgxkjd/VIDEO0058.mp4
    Last edited by cbuts; 07-24-2013 at 09:32 PM.



    2006 Chevrolet Malibu 3.5l V6
    JVC KD-R620
    RE Audio XXX 6.5 components (front)
    Hifonics ZRX500.2 500W 2-Channel Class A/B Amplifier
    2 Sundown Audio 12s
    Rockford fosgate 15001bd Mono Amp
    Big 3 Upgrade
    Cadence 0 AWG Wiring Kit
    Singer 275A Alternator
    Optima Red Top under hood




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    Re: Battery - Alternator HELP

    What car do you have? And why did you take off the small pulley that came with it? If you use the larger pulley, the alt will spin slower, and possibly make it shut down when your engine is running slower. Which is what you're seeing.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

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    cbuts's Avatar
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    Re: Battery - Alternator HELP

    Quote Originally Posted by gckless View Post
    What car do you have? And why did you take off the small pulley that came with it? If you use the larger pulley, the alt will spin slower, and possibly make it shut down when your engine is running slower. Which is what you're seeing.
    i didnt have a smaller belt at the time, its an 06 malibu 3.5l



    2006 Chevrolet Malibu 3.5l V6
    JVC KD-R620
    RE Audio XXX 6.5 components (front)
    Hifonics ZRX500.2 500W 2-Channel Class A/B Amplifier
    2 Sundown Audio 12s
    Rockford fosgate 15001bd Mono Amp
    Big 3 Upgrade
    Cadence 0 AWG Wiring Kit
    Singer 275A Alternator
    Optima Red Top under hood

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    Re: Battery - Alternator HELP

    Quote Originally Posted by cbuts View Post
    i didnt have a smaller belt at the time, its an 06 malibu 3.5l
    Well get one, put the smaller pulley on, and see what happens then.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

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    Re: Battery - Alternator HELP

    Quote Originally Posted by gckless View Post
    Well get one, put the smaller pulley on, and see what happens then.
    yeah i guess ill have to try that... but what if it dosnt work.. lol

    thx for the posts



    2006 Chevrolet Malibu 3.5l V6
    JVC KD-R620
    RE Audio XXX 6.5 components (front)
    Hifonics ZRX500.2 500W 2-Channel Class A/B Amplifier
    2 Sundown Audio 12s
    Rockford fosgate 15001bd Mono Amp
    Big 3 Upgrade
    Cadence 0 AWG Wiring Kit
    Singer 275A Alternator
    Optima Red Top under hood

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    gckless's Avatar
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    Re: Battery - Alternator HELP

    Quote Originally Posted by cbuts View Post
    yeah i guess ill have to try that... but what if it dosnt work.. lol

    thx for the posts
    Well then go from there. If it's not that, chances are it's your car. Were you monitoring voltage before you put the alt in? Did it do this?

    I'd bet it's the pulley though.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

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    Re: Battery - Alternator HELP

    Quote Originally Posted by gckless View Post
    Well then go from there. If it's not that, chances are it's your car. Were you monitoring voltage before you put the alt in? Did it do this?

    I'd bet it's the pulley though.
    not the pulley ...its the car ..before i externally regulated my impala ..it would drop to 12.9 its computer controlled u will have to externally regulate it to keep 14.4 or higher




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    Re: Battery - Alternator HELP

    Your alternator was designed to run with that smaller pulley...




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    Re: Battery - Alternator HELP

    Quote Originally Posted by gckless View Post
    Well then go from there. If it's not that, chances are it's your car. Were you monitoring voltage before you put the alt in? Did it do this?

    I'd bet it's the pulley though.
    no everything was completely fine before the install, and after starts up fine, i notice my voltage sitting at 14.8 from what it was before like 14.2 and then after a minute i noticed battery light on, and voltage now sits around 13 when idling in park, and goes down to 12.4 while at a stoplight(no accessories)

    i really hope your right with the pulley, this is really bugging me, i hope i dont have trouble finding one



    2006 Chevrolet Malibu 3.5l V6
    JVC KD-R620
    RE Audio XXX 6.5 components (front)
    Hifonics ZRX500.2 500W 2-Channel Class A/B Amplifier
    2 Sundown Audio 12s
    Rockford fosgate 15001bd Mono Amp
    Big 3 Upgrade
    Cadence 0 AWG Wiring Kit
    Singer 275A Alternator
    Optima Red Top under hood

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    Re: Battery - Alternator HELP

    Quote Originally Posted by cbuts View Post
    yeah i guess ill have to try that... but what if it dosnt work.. lol

    thx for the posts
    sry its the car ..blame chevy




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    Re: Battery - Alternator HELP

    Quote Originally Posted by bubbagumper6 View Post
    So you install the alternator incorrectly then wonder why it doesn't work...

    elaborate?

    ---------- Post added at 09:44 PM ---------- Previous post was at 09:43 PM ----------

    Quote Originally Posted by NASTY08IMPALA View Post
    not the pulley ...its the car ..before i externally regulated my impala ..it would drop to 12.9 its computer controlled u will have to externally regulate it to keep 14.4 or higher
    where would i find an external regulate?



    2006 Chevrolet Malibu 3.5l V6
    JVC KD-R620
    RE Audio XXX 6.5 components (front)
    Hifonics ZRX500.2 500W 2-Channel Class A/B Amplifier
    2 Sundown Audio 12s
    Rockford fosgate 15001bd Mono Amp
    Big 3 Upgrade
    Cadence 0 AWG Wiring Kit
    Singer 275A Alternator
    Optima Red Top under hood

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    Re: Battery - Alternator HELP

    Quote Originally Posted by cbuts View Post
    elaborate?
    I revised my post, I just meant the alternator was designed to produce output at certain RPM's and by changing the pulley to a larger one you slow down the alt and probably decreased it's output.




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    Re: Battery - Alternator HELP

    Quote Originally Posted by NASTY08IMPALA View Post
    not the pulley ...its the car ..before i externally regulated my impala ..it would drop to 12.9 its computer controlled u will have to externally regulate it to keep 14.4 or higher
    Bad news bears right there.

    He said it wasn't doing that before though. Are these the same models? Yours is 2 years newer so it's possible they updated the computer in that timeframe. I don't know either way though.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

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    Re: Battery - Alternator HELP

    Quote Originally Posted by bubbagumper6 View Post
    I revised my post, I just meant the alternator was designed to produce output at certain RPM's and by changing the pulley to a larger one you slow down the alt and probably decreased it's output.

    Okay, i just figured it came with a big one so why not try it.. my 110 stock alt idled and drove around 14 v and dropped 13.5 when bass hit, if i change the pulley will this idle like its supposed to..

    nasty thinks otherwise.. really mind boggling and FRUSTRATING



    2006 Chevrolet Malibu 3.5l V6
    JVC KD-R620
    RE Audio XXX 6.5 components (front)
    Hifonics ZRX500.2 500W 2-Channel Class A/B Amplifier
    2 Sundown Audio 12s
    Rockford fosgate 15001bd Mono Amp
    Big 3 Upgrade
    Cadence 0 AWG Wiring Kit
    Singer 275A Alternator
    Optima Red Top under hood

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    Re: Battery - Alternator HELP

    Quote Originally Posted by cbuts View Post
    elaborate?

    ---------- Post added at 09:44 PM ---------- Previous post was at 09:43 PM ----------



    where would i find an external regulate?
    i have a transpo bout 125 bucks ..

    ---------- Post added at 10:48 PM ---------- Previous post was at 10:48 PM ----------

    Quote Originally Posted by cbuts View Post
    elaborate?

    ---------- Post added at 09:44 PM ---------- Previous post was at 09:43 PM ----------



    where would i find an external regulate?
    i have a transpo bout 125 bucks ..




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