Having problems with your 1997 Nissan Maxima ?

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 this out when i unplug my batterie and the car is running the car will shut down can it be my alternator doesnt charge could or what can it be? thanks

Posted / edited by AnonymousUser on : 08-03-2021

Answers :

The battery should never be disconnected while the motor is running - this can cause excessive voltages to appear on the alternator output.
\015\012That in turn could cause destruction of any electronic module on the vehicle, including damage to the alternator itself.
\015\012Assuming 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.
\015\012Check for a drain current from the battery while the vehicle is standing with engine and all electrical system turned OFF -
\015\012[ 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],
\015\012
\015\012Also 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.
Check the wire connections at the starter. I had the same problem with the battery dying for no reason. Sometimes the car would start, sometimes not, sometimes it might start with a jump.It turned out there was damaged insulation on the wires near the starter connections that would short and drain the battery. Once repaired no more problems.
Repair Help & Product Troubleshooting for 1997 Nissan Maxima

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