i recently just bought my 2008 cobalt ls i put my system from my last car inside same wires same everything
amps
-american bass sq1200
-Kole audio 960 4channel highs
subs
-2 12' fosgate P2s
2 american bass BEYMAS
2 Fosgate full range 6x9s

Basically at first i had no problems bcuz the car is like brand new but just recently as of a couple days ago if im playing my system for give or take 5-10 mins it will shut off my dashlights and sometimes my headlights i know that my battery isnt holding charge
i just need to know what i need to replace in order to fix this problem wether it being buy a new H.O. alternator or deep cycle battery(yellow top) however you prefer to go about it,
ive had people tell me to replace either or but i feel like if i replace the alternator then i would still have the battery running out of juice to fast and causing the alternator to overwork itself and the battery draining and recharging very quickly isnt very good for it either

But if i replace the battery with a Yellow top or something similar im worried i would run into the battery being too much for the alternator and the battery being to much for the alternator to charge

another option was to just install another battery BUT then wouldnt that cause the alternator to overwork charging 2 batteries? thus shortening the life of my alternator

if it comes down to it and i do in fact have to replace the alternator and battery im going to ditch the subs and just go with mids and highs bcuz thats how the majority or cars are around where i live.

i appreciate anyones help or input so fire away

 

I think that if you replaced the battery you would be fine.

get your battery tested it could have a dead cell or something in fact go to advanced auto and get both of those tested.

 

start the car and unhook the negative terminal, if the car dies its your alternator.

 

this.

 

i went to autozone and advance they both sat there and said the battary was fine without the stero on or anything but as soon as i turn on my deck plop goes the power level idk and its not that the alternator is bad i just need to know if i get a high output one if it will stop my car from losing its power when i play my system
ill make a video if i can

 

also i have Hids and they stay on for like 15 secs after i shut the car off could this maybe drain the battery more bcuz i really didnt have any trouble until i got the headlights put in

 

If your lights are dimming from your system then get a capacitor, the lights shouldn't drain your battery enough for it to effect anything.

 

are u playing it with the car on or off? buy a mulit meter and test the voltage with the car on and off.

 

you can get one for under $10 from harbor freight


edit voltage should be 12.5 with the car off and should rise to 13+ when running

 

our cars are stupid but they tend to start at 14.4 and drop down to 13.8 after 30 seconds

 

yea PCM controlled....sticks to around 13.4-13.8 like JJ said.

 

just get a second battery. no need to wire it to the altenator

 

^^^ what? id respond to that BUT then c4 would call me a dick again. i have to keep my ******* comments to a max of one per week otherwise he might bring up this youtube comment i did... then **** will hit the fan

 

look man, there's ********, and then there's honorable ********...you're the latter, because no ******* comment goes undeserved when JJ says it. LOL. btw been busy as hell lately bull Ill throw up that DC alt video with voltage etc. under full tilt and accessories if you're interested at all in that spare alt I have...like I said, regulator needs to be swapped on it though...easy enough with a spare which I'd include in the sale ;D

 

am i missing something?

 

interested yes gonna happen prob not. in all honestly ive stopped messing with my car atm to take care of other priorities and while id sure as hell want it it might be a while before i let myself buy it.

ya your comment is retarded and rather then bash you i made an inside joke for c4

oh and if you really want to know i dont mind telling you

 

okay teach me something new!

 

wait you want me to tell u the inside joke or tell you why i think ur comment was stupid?

 

hahah forget itt.

op start with a capacitor and if your **** still dims id get an alternator.. am i right or am i being dumb again?

 

well the thing is the OP has a problem in his car right? his question is flawed because he really doesn't know the problem so until he figures it out any suggestion possible or not is just a bad guess. Now i could be wrong but from looking at his posts and the time frame of them hes probably never looking back at this thread so really ur just talking to whoever posted in the thread not the OP. lastly you cant not hook up a battery to the alternator. If you expect a result negative or positive you have to hook it up to the car which would mean it would be wired to the alternator (directly or indirectly)... if you dont care for the result then just buy some duracells and throw them in the trunk for the same effect at a fraction of the cost.

 

i meant indirectly.. meaning just positive to the current battery and ground the negative.

 

in which case it technically is "wired" to the alt....but I'm sure that's what you meant...we've just seen so much dumb **** come through this part of the forums patience is thinner than lindsay lohan after a coke binge.

 

 

******* hahahahahah you know what i meant

 

we do but thats not the point