Nissan 370Z Forum - View Single Post

Z_ealot · 12-07-2016, 12:29 PM

Hey guys,

So I'm trying to understand the different modes our fuel system has on our cars and was wondering if anyone know the specs as to when our cars are supposed to go into closed loop operation from a cold start. any help in this matter would be much appreciated as I am trying to figure out whether my thermostat or o2 sensors need to be replaced as I am getting a rich condition on my long term fuel trims of around -15%.

12-07-2016, 12:29 PM	#1 (permalink)
Z_ealot A True Z Fanatic Join Date: Sep 2010 Location: Albuquerque, NM Posts: 2,045 Drives: 09 370Z Touring/Sprt Rep Power: 10091	open loop/closed loop operation Hey guys, So I'm trying to understand the different modes our fuel system has on our cars and was wondering if anyone know the specs as to when our cars are supposed to go into closed loop operation from a cold start. any help in this matter would be much appreciated as I am trying to figure out whether my thermostat or o2 sensors need to be replaced as I am getting a rich condition on my long term fuel trims of around -15%.