Shifter rod vacuum at idle

[Alex Mckenzie]

Hi
Any thoughts on this one?
Bora auevr6, it’s been intermittently surging
Bad response rotten egg smell(over fuelling) one minute then great the next.
O2 sensors are 10month old. MFA replaced
No change.
I found a vacuum leak from the shifter rod actuator, plugged back in, but now it’s down(fully actuated) at idle

Can’t find any other vacuum leaks


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[Alex Mckenzie]

In case I have the wrong term
To clarify what I mean see picture this is down at idle


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[Alex Mckenzie]

Update I checked the n156 valves they are operating. From what I can tell the n156 valve closes on startup, it shouldn’t until 4100rpm. Only other thing I can think of now is the ecu thinks the engine speed is over 4100rpm. I could have this all wrong though


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[beale187]

Curious, how did you confirm the n156 valve is operating?

Also any noise coming from the manifold? Specifically near the change over barrel?

[Alex Mckenzie]

Good news, I was (still am) a idiot
I switched the shifter rod control (n156) and the sai valve plugs oops

It’s a tight space to work in without removing the radiator.

She is now behaving nicely.


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