I lost the end of the line(s)... there are two grey plastic lines, one from
the throttle body and the other from the idle control valve, if I have that
right; I never noticed it before but the line from the idle control valve is
capped off right near the firewall, and the throttle line has pulled free
from whence it came on the firewall end.

Where (or to what) do they connect? There's an oval hole in the firewall but
I thought I'd ask before went poking around in the realm of the black
widows...

What effect would it have to have the idle line capped like that? What would
be the point?

Cya,

Robert