hey guys.,.. again another question, ok.... battery light is on... i got my alt and batt tested and it says there good, and i got a thing on my stereo which tells me the volts, now when im idling it will go all the way down to 10, then 10.5 with no accessorys on... when i go to 2000 rpm it will go to 12.5.. then down again when it goes back down to idle... anyone know what it can be? ooo and also when i start it in the morning, it will say 14 volts, but then 10 mins later it will go down to 12 unless i got lights on and it goes to 11 or lower.. now idle with lights on then 9 and car wants to die.And if i dont keep it above 12 when i shut the car off the batt wont be chaged and i cant start the car.. plz helpp

 

ifyou have a lead acid batt try adding some water this site has the procedure
http://www.trojan-battery.com/Batter.../Watering.aspx

also check all your connections(top of batt and alt)and make sure there clean. Do you have a Underdrive pully on your engine?

 

no i dont got udp, but sumone said b4 it could be the batt temp sensor, wth is that lol?

 

That wont do anything.
Mine drags on the ground when i drive.
It will but off a check engine light code but not battery light.
Its either battery/alternator/or connection.
Sounds like bad connection or alternator. Check grounds. Check them twice. Check the power on the. Check connections on the alternator.
Make sure to check your battery first thats easy.
Your alternator belts doesnt squek or shoot off rubber does it?

 

no i got my batt checked and alt they said alts good, no squueks or nuttin and new belt on it.. they said i need a charge on my battery its a maintence free battery.. plus my car idles at 900 when its supposta be at 1100 so im guessin its not chargin the battery