[kierandill]

Fette! With the tech talk! Very impressive.
Suffice to say, it really isn't on the throttle body, or near the firewall.
Jethro_13 has a point, there, though. Maybe your idle has dropped due to air/fuel filter or the need for a tuneup.

 

[kierandill]

A. That's too high
B. Did you read Fette's post? You don't adjust the idle with the screws at the throttle body. If you don't believe her or me, ask my friend Mr. Haynes.