Uhh Help! (Alternator)

AJRight 2008 · November 11th, 2007, 11:59 PM

I think i screwed up my Alt. I'll accelerate over 3k and the lights go dim until the car shifts and sometimes the bat. light comes on. I'm not sure how many amps my Alt. cranks out but ill check tommorow but will a alt from a GT work on my car? cuz i have my subs and a much of interior lights runnin off the alt, any suggestions on amperage sizes? Thanks much aperciated

WLJohnson05 · November 12th, 2007, 12:13 AM

Originally Posted by AJRight 2008

I think i screwed up my Alt. I'll accelerate over 3k and the lights go dim until the car shifts and sometimes the bat. light comes on. I'm not sure how many amps my Alt. cranks out but ill check tommorow but will a alt from a GT work on my car? cuz i have my subs and a much of interior lights runnin off the alt, any suggestions on amperage sizes? Thanks much aperciated

what kinda system u pushin in the back??? sounds to me like ur alternator is going out

tjames · November 12th, 2007, 02:25 AM

Originally Posted by WLJohnson05

what kinda system u pushin in the back??? sounds to me like ur alternator is going out

+1 sounds like your subs are killin your alternator

GreenFaleen · November 12th, 2007, 10:26 AM

your alt is toast and everytime that battery light comes on your car changes to battery power so your killing your battery too.

Youngin · November 12th, 2007, 05:50 PM

would a capaciter help that situation?

GreenFaleen · November 12th, 2007, 06:43 PM

I doubt it sounds just like his alt is going bad it might not be his subs the one he has just might be old

Tlord18 · November 12th, 2007, 06:45 PM

Yeah, definitely get a cap. Regardless though, your battery shouldn't drain that fast unless you have a 2000 watt amp. I would suggest driving it for a while with the subs disconnected and if the battery light comes on when you accelerate then its time for a new alternator.

jarede312 · November 12th, 2007, 09:07 PM

agreed ^^

97TunedMustang · November 12th, 2007, 09:35 PM

Sounds like your alternator is toast. If you have a rather large amp and subwoofer setup you probably want to consider getting a larger alternator to replace the stock one.

Do NOT waste your money on a capacitor. They do nothing useful. its a shitty bandaid for a much larger problem. Upgrade your alternator and battery.

WLJohnson05 · November 12th, 2007, 09:46 PM

Originally Posted by 97TunedMustang

Sounds like your alternator is toast. If you have a rather large amp and subwoofer setup you probably want to consider getting a larger alternator to replace the stock one.

Do NOT waste your money on a capacitor. They do nothing useful. its a shitty bandaid for a much larger problem. Upgrade your alternator and battery.

100% agreed they are a waste of money

itschristorres8 · November 12th, 2007, 10:08 PM

optima battery
better alternator
problem solved

AJRight 2008 · November 12th, 2007, 10:12 PM

Woah slow down guys. I didn't plan on falling asleep after i posted this so i could post more info about the car. Ok
1. I got a new alt like in may
2. I have subs but their only powered by a 300W amp so i dont think that would have killed it.
3. How big an amp should i go with runing that and all the interior lighting and stuff?

Hourofpain · November 12th, 2007, 10:17 PM

unhook the amp and sub

and drive with it.

if it fixes it

there ya go
if it still does it
...
well did you get the alternator with a ifetime warranty?

AJRight 2008 · November 12th, 2007, 10:31 PM

Probly i mean i did buy it from Napa so most likely it does. But, it jsut started doin this and i think i (according to my friend) "buzzed" it while i was dikin around and lowered it capacity by runin it to hard. But does any one happen to know what the stock alt. # amps on the v6 are by any chance? Thanks

dark-samurai2 · November 13th, 2007, 07:38 AM

ok well this sounds like a problem with our chrage back wire not really the entire alternator like every one has suggested. look for any corrosion on your battery terminal and try chraging your battery. your alternator sounds too new to be causing this problem. and a normal alternator should be about 85 to 90 amps. just to be safe though i would take a little trip to auto zone and ask them to help you test it. and have them test the voltage of your battery to make sure its at 12.6. and a capacitor is not junk nor is it a cheap bandade to cover up a bigger problem. it most cases it can really help you when your running big power. but you seemed to have a small system so i dont suggest buying one until your really pushing some wattage. but still go down to autozone and have them check it. you could just have a bad charge back wire. try these things befor you go spending big money.

dark-samurai2 · November 13th, 2007, 07:42 AM

but when you were dikin around with it you could have burned out a diode in it now that i think about it.

WLJohnson05 · November 13th, 2007, 09:26 AM

Originally Posted by dark-samurai2

ok well this sounds like a problem with our chrage back wire not really the entire alternator like every one has suggested. look for any corrosion on your battery terminal and try chraging your battery. your alternator sounds too new to be causing this problem. and a normal alternator should be about 85 to 90 amps. just to be safe though i would take a little trip to auto zone and ask them to help you test it. and have them test the voltage of your battery to make sure its at 12.6. and a capacitor is not junk nor is it a cheap bandade to cover up a bigger problem. it most cases it can really help you when your running big power. but you seemed to have a small system so i dont suggest buying one until your really pushing some wattage. but still go down to autozone and have them check it. you could just have a bad charge back wire. try these things befor you go spending big money.

sorry dont agree with the cap part...IMO caps are a waste of money

97TunedMustang · November 13th, 2007, 09:49 AM

Originally Posted by WLJohnson05

sorry dont agree with the cap part...IMO caps are a waste of money

Yep, i recall a forum i was on sometime ago where someone went into great detail explaining how a capacitor works in a car audio application, and why they dont work like you'd think they might and why they're a waste of money. Just go to any respectable car audio forum and ask them what they think

dark-samurai2 · November 13th, 2007, 05:33 PM

all a capacitor does is help out the battery by holding in stored energy and releasing it when the bass needs that extra bit of power that would normaly drian the battery to a bad spot. and it keep voltage spikes from occuring and smooths it out.

WLJohnson05 · November 13th, 2007, 06:17 PM

found the article...
FAQ- Why a cap is useless! - 3.8 Mustang Message Board

November 11th, 2007, 11:59 PM	#1
AJRight 2008 Regular Join Date: Nov 2006 Location: Toledo, Ohio Posts: 146	Uhh Help! (Alternator) I think i screwed up my Alt. I'll accelerate over 3k and the lights go dim until the car shifts and sometimes the bat. light comes on. I'm not sure how many amps my Alt. cranks out but ill check tommorow but will a alt from a GT work on my car? cuz i have my subs and a much of interior lights runnin off the alt, any suggestions on amperage sizes? Thanks much aperciated __________________

November 12th, 2007, 10:26 AM	#4
GreenFaleen Resident MM Ricer 2006 Scion tC 13.9@103/8.9@81 Join Date: Nov 2006 Location: Raleigh/Lenoir, NC Posts: 9,446	your alt is toast and everytime that battery light comes on your car changes to battery power so your killing your battery too. __________________ Scion Tc-strup racing header, CAI, Ground Kit, NOS 100shot, Custom suspension, Doc. I 50% STS MM 4 Banger club: Senior Ricer "Horsepower sells cars, torque wins races." -Carroll Shelby Thanks To My Sponsors: Strup Performance

November 12th, 2007, 05:50 PM	#5
Youngin Hip Hop Artist 2007 Mustang v6 11.47@120.58 Join Date: Nov 2006 Location: Californ-i-A Posts: 3,649	would a capaciter help that situation? __________________ http://www.myspace.com/moddedmustangz Modded Mustang's Song Song #2 In Teh Werkz If You Feel That My Post Was Helpful in Anyway , Don't Thank Me ... Rep Me

November 12th, 2007, 06:43 PM	#6
GreenFaleen Resident MM Ricer 2006 Scion tC 13.9@103/8.9@81 Join Date: Nov 2006 Location: Raleigh/Lenoir, NC Posts: 9,446	I doubt it sounds just like his alt is going bad it might not be his subs the one he has just might be old __________________ Scion Tc-strup racing header, CAI, Ground Kit, NOS 100shot, Custom suspension, Doc. I 50% STS MM 4 Banger club: Senior Ricer "Horsepower sells cars, torque wins races." -Carroll Shelby Thanks To My Sponsors: Strup Performance

November 12th, 2007, 06:45 PM	#7
Tlord18 Regular Join Date: Nov 2006 Posts: 116	Yeah, definitely get a cap. Regardless though, your battery shouldn't drain that fast unless you have a 2000 watt amp. I would suggest driving it for a while with the subs disconnected and if the battery light comes on when you accelerate then its time for a new alternator. __________________ 1998 V6, wheels,intake,headlights, foglights, 2 kicker comp vr 12's

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November 12th, 2007, 09:07 PM	#8
jarede312 Newbie Join Date: Nov 2007 Posts: 28	agreed ^^

November 12th, 2007, 09:35 PM	#9
97TunedMustang Enthusiast Join Date: Jan 2006 Posts: 963	Sounds like your alternator is toast. If you have a rather large amp and subwoofer setup you probably want to consider getting a larger alternator to replace the stock one. Do NOT waste your money on a capacitor. They do nothing useful. its a shitty bandaid for a much larger problem. Upgrade your alternator and battery. __________________ New block with forged internals running 16psi, tuned by Lasota Racing Too many mods to list... 3.73's and Truetrac Finally Done! Water-methanol injection? Dyno Tune fo sho, Street tune FTL!

November 12th, 2007, 10:08 PM	#11
itschristorres8 SP00LIN V6 2000 Mustang V6 437rwhp 402rwtq V6 Join Date: Aug 2006 Location: south florida Posts: 14,692	optima battery better alternator problem solved __________________ The Sickest 6 The reason V8 owners on here hate me

November 12th, 2007, 10:12 PM	#12
AJRight 2008 Regular Join Date: Nov 2006 Location: Toledo, Ohio Posts: 146	Woah slow down guys. I didn't plan on falling asleep after i posted this so i could post more info about the car. Ok 1. I got a new alt like in may 2. I have subs but their only powered by a 300W amp so i dont think that would have killed it. 3. How big an amp should i go with runing that and all the interior lighting and stuff? __________________

November 12th, 2007, 10:17 PM	#13
Hourofpain On Probation 1998 Mustang Gt 14 MPG Join Date: Mar 2007 Location: Virginia Beach Posts: 1,336	unhook the amp and sub and drive with it. if it fixes it there ya go if it still does it ... well did you get the alternator with a ifetime warranty?

November 12th, 2007, 10:31 PM	#14
AJRight 2008 Regular Join Date: Nov 2006 Location: Toledo, Ohio Posts: 146	Probly i mean i did buy it from Napa so most likely it does. But, it jsut started doin this and i think i (according to my friend) "buzzed" it while i was dikin around and lowered it capacity by runin it to hard. But does any one happen to know what the stock alt. # amps on the v6 are by any chance? Thanks __________________

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