Do you have the hose that runs to the BPT from the BCDD? It's red in this picture. That gave me trouble with my high idle when I removed the EGR stuff.

Sorry, didn't have time to test my car yesterday, got a new gun, as for the picture, I do have that line, I recently checked my vacuum setup against a good 280zx and made sure everything was connected correctly/valves turned the right way.

For me that line runs from the BCCD to the thermal VV, then to the EGR systm

So I did tests today, it was in fact my AAR, even though it is new, I also noticed that the hoses going to it were more shot than I realized so I replaced them with heater hose for now.

So If the valve only closes when it has been off and warm for awhile, I am guessing it is not getting current to the heater, so is my best bet to just replace the wire.

The AAR gets its power from the same circuit as the fuel pump. Has your fuel pump relay been messed with at all? Is the pump still on the relay.

I've found also that the AAR hose interferes with the AAR plug. It's not really a very good design. You might find that the plug is just not seated correctly.

Of course a meter would tell if the plug has power, but it will only have power when the fuel pump relay is active (engine running or AFM open and key on). Glad it was the easy fix (so far). Good luck.

The Fuel pump is on a separate circuit, when i got the car AFM was jacked and the circuit runs though that, so I bypassed it, hmmm...