I wouldn't guarantee the airflow meter plate will track the plunger, if the latter is sticking. However, I suppose the plate rest could be gummed up and preventing a full return, or a problem with the linkage, and all cause the same symptom.

If it needs adjustment - which seems unlikely given the way the problem developed - I would take the airflow meter out for examination, leaving the distributor attached.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7