On my '91 SE with the same engine, I get a "click" sound from the ignition module on the left fenderwell, if I rev the engine in neutral. It clicks just as the revs begin to increase. I assume it's a relay; it has a more mechanical click sound, and it's done it for 15 years with no apparant problems.

But, sure, you can remove the air filter and run the motor in the garage.
Just don't drop the cat down the intake or shovel sand into it.
You can temporarily disconnect the air temp sensor on the filter housing, and the hoses, with no issues at all - no fail codes, etc.
But don't drive it that way, it might suck all that dirt from the underhood pad right into the engine - ouch.

DG