Print Page | Close Window

07 charger alt problem

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=122701
Printed Date: May 14, 2024 at 12:29 PM


Topic: 07 charger alt problem

Posted By: dukesrebelyell
Subject: 07 charger alt problem
Date Posted: July 15, 2010 at 5:58 PM

i just put a treo 2000.1 amp and a treo ssx10 sub in my 2007 charger. i wasnt having any battery light issues before i put the system in. i saw that it has a 140 amp alternator and i thought that it would be enough for the system. now even with the volume on the head unit turned all the way down the battery charge light still comes on. is the alternator in the car just a piece of junk or is my battery not able to hold a charge or what. i dont really want to go out and buy a new alternator because i have ran more powerful systems in other cars with out this problem and the other cars were running like 60 or 80 amp alts. any help please.



Replies:

Posted By: tommy...
Date Posted: July 15, 2010 at 6:58 PM
Probably first thing would be get a meter and test the voltage at battery , amp ,  etc...! You can do the same with the stereo at various levels eventually to the loudest you would ever listen to it...Recording voltage each time...Have a buddy hold the vehicle at 1500-2000 rpm's and test again...Start there...Maybe read up on The Big 3 too...

-------------
M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!




Posted By: dukesrebelyell
Date Posted: July 17, 2010 at 9:22 AM

as far as the big 3 goes, this vehicle has the battery mounted in the trunk with 4ga running from the alternator to the battery. so i upgraded the engine block to ground cables with 1/0 and also the battery to ground in the trunk with 1/0 also before i even installed the system. i know the ecu controls the voltage on this vehicle. basically my options are probably to upgrade the battery to a couple of aftermarket car audio batteries in place of the one oversized oem battery or upgrade to a HO alt. i have really only found a 160amp aftermarket alt and since the stock is 140 im not really going to see that much of a performance gain.





Posted By: oldspark
Date Posted: July 17, 2010 at 9:00 PM
Can you ascertain where the charging voltage is being sensed?
Else the voltage across the battery as opposed to the system/ignition/ECU voltage?

Charging systems should be sensing (at least) the battery voltage. But many monitor the system/ignition voltage instead, or the alternator output voltage, and assume that that reflects the battery voltage.




Posted By: tommy...
Date Posted: July 17, 2010 at 9:19 PM
Places like Ohio Generator make custom units...Will have to see...i dunno....

-------------
M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!





Print Page | Close Window