What could possibly be causing a loud buzzy vibration in passenger dash and a fast idle in 1996 Toyota Corolla?

Answer 1

The high idle of your engine is probably the cause of the "Buzzing" you hear from the passenger side of the car. (Dash rattling against windshield or some other plastic) You can either try to adjust the idle yourself if you know how, or have a friend or mechanic do it for you.

Your neighbours cat was running across the road as the cat was being chased by a sworm of barking bee's. The cat was only on a one track mind and that was RUN, when the cat crossed the road as you were nearing your driveway. The cat has been stuck in your air filter housing after being flipped up into the motor by the tires, then it was bounced around like a pin ball machine by your Fan. As the Barking bees had caught up to the cat by then, they were also in the hood area. after being bounced all around, like a five dollar prize , the cat gained momentum again and pulled off the airfilter housing hose and crawled into it, thinking it would escape the barking bees. since the cat it now stuck in there and feeding on the bees that got in there before the cat did and ar enow just crunchies, the other Barking bees are taking turns peeing on the cats ass as it is stuck in there. So, The "BUZZING" you hear is the barking bees making fun of the cat that is stuck in the air filter housing, and the "rattling against the windshield" you hear is the dam cat KNOCKING ON THE WINDOW saying, YOU big meanie...let me out, and take me home