LoudBimmer Posted January 23, 2012 Report Share Posted January 23, 2012 For some reason my voltage has been pretty low for past 3-4 days. While driving it stays @ 13.8v, before it was 14v. When car is off it's @ 11.xx and when I start the car it goes down to 10.xx. I checked charging voltage with DMM in the back where battery is and it's 13.8 and does not go up anymore. Today I played music full tilt for about 15-20 seconds and it dropped down to 11.8-12.2v and once I turned it off it stayed @ 13v and slowly went back up to 13.5 and then to 13.8. On friday I dropped my car off at good year (Mr.Tire) shop and the only thing they did was checked front suspension. I had my car fixed there before few times and never had problem with them. What could be the problem? Battery ground is good and alternators ground I haven't checked yet, but it should be good too. P.S. Battery was fully charged about a week ago with AGM battery charger. Battery is XS power D3100. Link to comment Share on other sites More sharing options...
Chally Posted January 23, 2012 Report Share Posted January 23, 2012 Maybe a loose connection somewhere? Or the regulator in the alt is going bad. Link to comment Share on other sites More sharing options...
speedball1978 Posted January 23, 2012 Report Share Posted January 23, 2012 I had a similar issue come to find out it was my alternator Link to comment Share on other sites More sharing options...
LoudBimmer Posted January 23, 2012 Author Report Share Posted January 23, 2012 Maybe a loose connection somewhere? Or the regulator in the alt is going bad. I had a similar issue come to find out it was my alternator I'm hoping it's not an alternator. Link to comment Share on other sites More sharing options...
RickyFriery97 Posted January 23, 2012 Report Share Posted January 23, 2012 Is it a stock alt? 2014 Chevy Silverado Crewcab 1994 Chevy Full Size blazer Link to comment Share on other sites More sharing options...
LoudBimmer Posted January 23, 2012 Author Report Share Posted January 23, 2012 Is it a stock alt? yes, I believe it's 120A Link to comment Share on other sites More sharing options...
RickyFriery97 Posted January 23, 2012 Report Share Posted January 23, 2012 Is the D3100 under the hood? 2014 Chevy Silverado Crewcab 1994 Chevy Full Size blazer Link to comment Share on other sites More sharing options...
alaskanzx5 Posted January 23, 2012 Report Share Posted January 23, 2012 my bet is on the alt t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
LoudBimmer Posted January 23, 2012 Author Report Share Posted January 23, 2012 Is the D3100 under the hood? In the back. Link to comment Share on other sites More sharing options...
LoudBimmer Posted January 23, 2012 Author Report Share Posted January 23, 2012 is there anyway to check if alternator is going bad? Or if battery went bad? which i doubt Link to comment Share on other sites More sharing options...
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