Commonly Used Abbreviations - General Information: "I"

IAC: Idle Air Control
IACV: Idle Air Control Valve
IAT: Intake Air Temperature
IC: Integrated Circuit
ID: Identification
I.D.: Inside Diameter
IFS: Independant Front Suspension
IFS: Inertia Fuel Shutoff (Ford)
Ign.: Ignition
IMRC: Intake Manifold Runner Control
In.: Inches
INCH Lbs.: Inch Pounds
in. Hg: Inches of Mercury
Inj.: Injector
IP: Instrument Panel
IRS: Independant Rear Suspension
ISC: Idle Speed Control
IVD: Interactive Vehicle Dynamics (Ford)
IVSV: Idle Vacuum Switching Valve