So today when I started the van it sort of stumbled and threw a check engine light. The light went out shortly after and it seemed to run fine. I checked the codes and got one blink and 2 blinks. According to the FSM it's air flow meter. What is this?

Also, when I went to clear codes and check again to make sure codes cleared it just blinks repetitively and fast, what is this?

One thing I'll note is when I was doing some other maintenance the other day I noticed the wires from the air filter area to the lower green connector on the front of the distributor were frayed and cut. I cut out the bad parts and spliced in some new wire. I also noticed a clicking sound coming from the air filter area when the car is off. Not sure if these are related but worth a shot.

Thanks for any insight!