More Confusing Data

Eventhough I have not been able to get the 85% benchmark reading for a CA car, I decided to go ahead and make some fine tune adjustments to the idle control to lean out the mixture.

Maybe 1/6 of a turn in total, idle feels the same, and then WOW! Meter starts counting down from about 30% to 0%. No change in idle though. Restarted car and tried again... same result. At this point it's sounding more and more like the control unit is taking a dump.

So I call my local dealer and I read him the part # from the control unit. He tells me not a good #. I try the # from my EPC and he says that is a good # will set me back to the tune of over $2,500.

He has no explanation for my part # not being in their system. Can someone with intimate knowledge provide/verify the correct part # for my California 1990 300te?

IN MY CAR NOW
mb #011 545 01 32
Bosch #02 80 800 322

Dealer Part #
011 545 28 32