Need help asap. Alternator or Battery connection??

[Sic95gst]

Ok My car will start fine and run great for a few minutes, After I have been driving for about 15 minutes or more the Volts drop off, but only drop like.2 or .3 lower then normal. When I hit the brake and my turn signal My volts go way down under 11.5 at sometimes. Also if I hit my High Beams the car will almost stall out. I need to know if this is my Alternator or maybe even my battery connections? any help would be greatly appreiciated.

Thanks,
Lewis

 

[GSTinCO]

Sounds like your alternator because it is not holding under load. Idle the car and turn on everything (headlights, ac, etc.) and read the voltage right off of the alternator. You could also take it to autozone and have them check it on the machine. Same basic thing.

 

[TurkF26]

ya just take it to autozone or kragen and they can test the alternator and battery for free

 

[Sic95gst]

It was the battery, Mine wasn't being held down by the OEM tie down and it would move around causing it to shift and, my battery was leaking pretty bad. I replaced the battery and got the OEM parts for the tie down. Everything is perfect now. Hopefully I will not have any more problems with anything... .