I just change my alternator and belt last week and the battery is less than a year. When the engine is warm and the headlights are on, the in dash volt meter drops to almost nothing when the radiator fan comes on. I don't have the cash to take ie to a shop and am tired of having to rev the rpm's at every stop light. any help will be greatly appreciated.

 

check the water level in the battery if u can, check for corrosion

 

could be a bum alternator. Expecially if its from autozone/advanced/etc. Ive gone through 3 before on my buddies car before we got a good one.

 

thank you both! BAD alt and battery