I took some video showing the oil light flicker at idle, just before accelerating away from idle
So I followed up today at the shop. I was paranoid all week about the possibility of a bad oil pump, so they put a diagnostic gauge on it today (made sure the engine/oil was warmed up). This is the result:
Shows 14 psi at idle, right at factory spec. Worst case dips to 10 psi when lugging down to 500-600 RPM.
Not sure why the light goes on. I am thinking it could be several things:
- The pressure switch is going off when it gets < ~8-9 psi,
- Could be a problem with the switch,
- There's some kind of pressure drop in the tee where it’s attached; caused by a peculiarity in the configuration (turbos are fed from this point)
- Something else going on with AAM kit.
As for the latter, perhaps AAM is looking into it, since there are two of us now experiencing the same issue on a recent install. However, I'm much less concerned now that I saw the pressure reading directly from the gauge.
--ZOM