Re: 87 iroc w/mass air sensor problems?
I would say to clean the MAF sensor using a sensor cleaner and make sure there are no holes/leaks in the bellows between the throttle body and MAF sensor.
Might even remove the IAC and clean its passage it sits in.
Of course, you've looked for other intake leaks?
Fuel pressure regulator hose is dry on the inside when you pull it off?
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