Any interest in SAI delete circuit?

[10DigitVIN]

Originally Posted by Gelbster

In my case I replaced all 4 based on Durametric diagnosis. Easy job.They do age out and if 1 or 2 are deteriorating .....

OK, I found out what was wrong...and I feel like a complete tool.

The exceptionally thin hard plastic vacuum line leading from the intake manifold to the secondary air check valve was disconnected, at the valve.

Everything looked totally fine when looking at the vacuum line and valve standing outside the vehicle. Both from the driver and passenger's side.

I finally found the disconnected line by getting a step ladder and climbing on top of/into the engine compartment, balancing myself and inspecting the entire SAI system (from above) with a high power flashlight.

When I found the disconnected vacuum line from the intake manifold at the valve I literally laughed out loud.

I cleared the check engine light with my scanner and all P-codes. The CEL has not come back on, neither have any P-code or pending codes in six days (approximately 150 miles of driving).

Additionally all OBD-II monitors have set themselves with he exception of EVAP which I have read can take a while to reset if the exact setup cycle is not run.

All-in-all a decent outcome.

Thanks everyone for the input, much appreciated!