How to test and replace your car's idle air control motor

Something wrong with your car or truck? Stop guessing when it comes to the repair and maintenance of your vehicle... get real auto repair help with how-to videos from professional mechanics. With the help of these automotive videos, you'll learn how to recognize a problem, diagnose it, find the right auto parts and tools for the job and finally... fix it, whether you have a used car or a new car.

This video tutorial will show you how to test and replace your car's idle air control motor. To test your IAC (Idle Air Control) motor, first start the engine and verify momentary high idle, then wiggle the wires to the IAC motor and listen to the RPM's. Turn on the air conditioning or turn the steering wheel hard left or right and listen to the RPM's. Remove the IAC motor, clean the carbon deposits and reinstall the IAC motor. Now check the resistance of the motor with an ohmmeter; two terminal IAC should be 7 to 13 ohms, and a four terminal IAC should be over 20 ohms; set the meter to 20K scale where a 10,000 ohm reading between the terminal and IAC should be obtained.

There's many parts to your car; brakes, engine, starter, drivetrain, suspension, chassis, air conditioner, heater, electrical sensors, fluids, transmissions, radiators, oil, tires, spark plugs... this devices are bound to fail sooner or later. Why not learn the skills of automotive repair and be your own repair service? The car dealers and service centers will just charge you an expensive bill, but you can be pretty fair to yourself.