honda civic voltage brpblem

[rico892002 10+ year member]

hi guys i been having a problem with my car ok, i have a 97 honda civic coupe with a 70 amp alt. And my system is 2 mtx 4250d amps and 2 kicker cvrs 12's and i have a xsitie 100 farad batt cap,and a intersate battery under the hood. Ok my problem is the pass 3 months i went threw 3 batteries and 1 alt. Sometimes my car will start and sometime it won't, I have to get jumps all the time. I went to advance auto to see y my car won't start some time and there telling me, that my system is killing everything and i need to get a bigger alt or some thing. I really don't have the money for that and i seen a lot of people put big systems in a honda civic. One of my buddies told me to get a second battery, he said that fix his problem, but i told him that will put more stress on the alt. A guys i really need your help, if i don't get this fix i'm selling everything and i'm done with caraudio.

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[johnecon2001 5,000+ posts]

You need to do the big 3 and listen to those guys at advanced auto.

You are killing your alt and you do need a larger one.

 

[DZNUTTS 10+ year member]

alternator can't handle..............upgrade it.

 

[rico892002 10+ year member]

so if i do the big 3 this will fix my problem

 

[Blunt 10+ year member]

with a 70 amp alt you only have about half of that for caraudio use the rest runs your car.

 

[rico892002 10+ year member]

yea i know that

 

[imaspaceguy90 10+ year member]

yea a 70amp alt i way to small for any decent setup, You should get atleast a 100 amp alt

 

[forbidden 10+ year member]

Have your friend tie a rope real tight around your neck, so tight that you are almost blacking out. Then leave the rope there and go about your normal everyday life. This is exactly what you are doing to the alternator.

 

[rico892002 10+ year member]

i trying to find a cheap way i can fix this problem because i don't have money to get a new alt or get it rebuilt

 

[Chevyaudio 5,000+ posts]

not really a cheap way to do this. There is a RIGHT way to do it, and that is buying a HO alternator

 

[rico892002 10+ year member]

ok i know people that have solobraics and 1200.1 watt kicker amps in there civic with stock 70 amp alt whats up with that

 

[Prowler573 5,000+ posts]

so if i do the big 3 this will fix my problem

In a word, No.

Upgrading your Big 3 will not increase your car's current charging capacity - it will merely provide a more efficient path for the available current to flow upon.

I do not know the specifics of your Honda's alternator but if it is available (and this is an "if") having the current alternator rewound to a higher output may potentially be cheaper than replacing it with an HO unit altogether.

If you aren't going to invest in more charging capability (HO alternator, rewinding the stock one, etc) then the only real solution is to either (A) Never turn up your stereo beyond a minimally audible level or (B) Remove some of the equipment entirely.

You're choking the daylights out of that stock alternator with all the current demands you are placing on it which it obviously cannot keep up with. There's no getting around more current demand requiring more current output. If you're lacking the latter then the former will continue to eat up batteries and/or alternators until you go with option A or B above.

 

[rico892002 10+ year member]

i have another question, why don't my lights dim if my alt can't keep up

 

[forbidden 10+ year member]

Throw me a link to the battcap.... Do you have any type of solenoid between the batcap and the primary battery? At this point I would also consider that one battery may be draining the other battery and vice versa, this damages a battery to the point that they will no longer hold a charge and place even a bigger strain on the alternator. Would I do the big3 (or 4), with a small alternator, yes I would given the equipment that you have. Electricity is an algebra equation, what you do to one side you must do to the other. Make the current transfer as efficient as possible to ensure the best results.

 

[rico892002 10+ year member]

http://www.batcap.net and i have the 300 model they said u don't need all that other stuff