Help me diagnose this problem: I can't rev past 3500 RPM intermittently (AK370Z)

XwChriswX · 06-19-2013, 12:05 AM

Quote:

Originally Posted by AK370Z

No tuned at all. Bone stock. That did came to mind but I rather want dealer to fix it under warranty as plan A.

I understand that of course, but it might be time for you to look into a tune... 72k on Stock tune with bolt ons, is pretty far.

Wondering if maybe an o2 sensor or something has been clogged over, and the ECU is holding back to compensate?

Quick google search brought up these threads... one might have promise:

Power cuts at 3,500rpm in all gEars

Cant rev pass 3500 rpm HELP

Specifically, this post:

Quote:

Originally Posted by ChrisSlicks

Stage 2 limp mode, otherwise known as drive it to the dealer mode. In this mode the engine power is cut by disengaging the variable valve timing, limiting fuel and air intake and limiting RPM to a low number - 3500 in our case.

Typical reasons are:
- Engine overheat past 300 degrees (not applicable here)
- Bad readings from crankshaft position sensor

It sounds like a software glitch given that there is no code thrown. Who knows, the programmer could have left some test code in there that was supposed to be removed but never was. If it never comes back I wouldn't worry about it. If it repeats try to drive to the nearest dealer without shutting off the engine.

http://www.the370z.com/nissan-370z-g...tml#post250296

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