My nissan 350z sometimes stalls after starting

try changing the battery in the key

is the check engine light on

There is no fuel cut off switch. The electric fuel pump only operates for a few seconds when the ignition is switched on and will only remain on when the engine has been started. If the engine is not started and the ignition is left on the computer will cut power to the pump.

If you want to cut all power to the fuel pump you have to remove the fuse for the pump or remove the relay that covers the power circuit to the fuel pump.

Try leaving key in door or ignition turned on to shut down the alarm...

Check your throttle cable from pedal to engine,may have came loose or something has broke.Make sure floor mats isn't catching at pedal,I am a 350 fan.love to have one.Have a 85 Nissan 720 4x4 with Weber.

replace ignition switch, not cylinder.

There is not a reset button on a Nissan product. If the security light is on solid when spinning the engine over then the security system is in "LOCK MODE" no matter if you use the correct key. If the alarm does not recognize the transponder (key) and it is tried then you will have to register all the keys to that vehicle. You will need to use the Nissan diagnostic tool Consult II or Consult III. You will need the 5 digits off of the BCM and the Nissan ASIST electronic service manual with the decoder feature. That will give the 4 digit code needed for the Consult II or Consult III to allow you to register the keys.

Or you could take it to a Nissan dealer.

Bad battery and or connections get it started and load test at Autozone for free

most likely a fuel pump issue. spray some break clean in the intake ande see if you can rev it up as your spraying, If you can you havea weak fuel pump

Nissan serena 1996 manual. please send me