Hello all first post here but I’m a frequent viewer, I’ve got a 2006 350z Revup with 105xxx kms I’ve been having a surging issue that under no load when I attempt to hold rpm’s at 2000 it bogs down by 100-200 rpm and jumps back up rapidly almost sounds like launch control for these cars through Uprev.



When I log this action it shows my exh cam adv bank 2 is bouncing from 40v to 0v as well as the exh cam sol bank 2 is bouncing up and down as-well this is the only rpm that this happens… Nissan told me today after $500 it’s my aftermarket intake I’ve had for 4 years no problems prior so they can get bent. I have a p0157 and p0159 both are for bank 2 sensor 2 which I know has a leak due to some bad welding on an 02 bung but this problem was prevalent before the original bung snapped off.



I’ve done the resets and I have NDS2 to do them as well I can do the pedal dance in my sleep the only reset I can’t get to function properly is the Exhaust timing relearn as it needs to rpm to hold between 1800-2000 for 20 seconds but it’ll always drop out of the range before the 20 seconds is up


Any ideas are greatly appreciated I know I need to swap the sensors to see if the timing issue changes banks but that’s about all I haven’t tried….

(log from NDS2)

https://www.reddit.com/r/350z/s/7rNJ6cGuzR


The car has all new

Camshaft Sensors

02 Sensors

Coils and Plugs

Bank 2 VVT sol.

Gallery gaskets

Upper and lower plenum gaskets

PCV valve



“Aftermarket Mods”

Aluminum valve covers

Motordyne exhaust

AFE tekeda intake

 

Did you use OEM parts when replacing the sensors, coils, solenoids?

Is your PCV system properly sealed up to your intake? (no vacuum leaks).
-Icer