My battery is running at 14 when i start up my car, according to my headunit. However, as i drive it drops down to 13.5 ish with the lights and radio amp and subs on. If i turn my heat on low, it goes down to 12.5. When i stop at a light, it goes down to 12 with the heat off, and 11.5 with the heat on. I just got a new alternator not even 6 months ago, and a new battery about 3 weeks ago. I opened the hood and it seems there is an unusual noise to the right, drivers side, not by the alternator. I dont know what to check or fix. Any thoughts?

 

Does your car have the crappy 65 amp alt and or underdrives. If it does, it's normal.

 

get a bigger bat 750

 

I believe i got a bigger one installed, and i have stock pulleys, and i got the most expensive battery they had ($80?)

 

Stock gauges as well, they aren't the most acurate. Was this a problem since the alt/bat install? Or just recently?

 

just recently, and im not going by the gages, im going by my headunit. It has a readout on the screen

 

Well find out what output the alt is and have it tested. maybe it's defective.

 

yea i think im gunna take a ride over to autozone tomorrow

 

do you have a power cap for the subs in the back or a second bat.. The amps might draw to much

 

Idk what a power cap is but im assuiming i dont have it. and it runs on the same battery but i havent had any problems in the past it just started