Hi Arthur,

AIR code can be tricky..the check is to make sure the pump runs
___ Sounds & hums likes it ought to be working.
_____Clutch check - only moving when cold? Disengages when engine hot?

and that the sov is allowing vac supply to the valve so the air can get pumped into the exhaust ports .
___ That's one of the vacuum lines I didn't replace.

If that is working,then you want to check the 02 sensor to see if it is still capable of a lean reading.
___I have you instructions on how to do that.

That is how the ecu determines if the AIR system is working..it does a self test and looks at the 02 sens value to go real lean. A weak sensor that is not capable of a very low [lean] voltage will pop an AIR code even though the AIR system is working correctly.
___I've put about 40k on car, God only knows how old o2 sensor is.

The ecu electrical sig for the AIR sov is in parallel with the pump clutch, so if the pump is working, you know you have a sig to the sov.

Thanks
Bob