Idle Air Control (IAC) valve, attached to intake manifold on firewall side of I4, is used by PCM to vary idle speed.
Does putting a/c on affect rad fan operation?
Not sure on this point, but there maybe a difference on idle increase between atx and mtx.
98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both
| 
