I was wondering if timing can be adjusted on the 4th gen? I was just wondering if maybe my timing is being retarted. Im having had starts and my car has a fairly new starter and has good plugs and fuel filter. I am getting an rear o2 sensor cel but the 02 is new but the light wont dissapear. I dont think its fueal related because if i let the fuel pump prime there is no differnece. I was also thinking as a longshot maybe my ignintion switch.

 

knock sensor maybe?

 

We can not adjust timing on a 4th gen maxima without a ECU tune

 

1) Clean your throttle body.
2) Clean the magnetic tips of both crank sensors.
3) Check the cold value of the engine coolant temp sensor, make sure it's within spec. It should be approx 800 - 1K ohm at around 50 deg. Resistance should be higher as the temp drops.

 

thanks ill check the temp sens and the crank sensors.