I own a nissan maxima 1997 , there is a problem, there is somthng killing my batterie , i checked all teh lights there is noone of them that stay on, my alternator seems to be cahrging good but i found...
The battery should never be disconnected while the motor is running - this can cause excessive voltages to appear on the alternator output.
That in turn could cause destruction of any electronic module on the vehicle, including damage to the alternator itself.
Assuming the electrical system has not been damaged, the cause of your discharge problem is most likely a current drain on the battery when the vehicle is unused.
Check for a drain current from the battery while the vehicle is standing with engine and all electrical system turned OFF -
[ while in this condition, if you don't have a current meter, temporarily connect a small bulb (6-12W) in series with the main battery ground cable - lamp glow indicates current drain - remove fuses, disconnect items to identify current drain],
Also check alterator output voltage (measured across the battery terminals) is approx 14.5V when engine is running and electric system is loaded with headlights or blower fan on.
Oct 20, 2009 |
1997 Nissan Maxima