You are watching: Idle air control valve 2001 ford taurus
HelloDescription and also Operation
The Idle Air manage (IAC) valve assembly (Figure 117) and also (Figure 118) controls engine idle speed and also provides a dashpot function. The IAC valve assembly meters intake air roughly the throttle plate v a bypass within the IAC valve assembly and throttle body. The PCM identify the preferred idle speed or bypass air and signals the IAC valve assembly v a mentioned duty cycle. The IAC valve responds by placing the IAC valve to manage the quantity of bypassed air. The PCM monitors engine rpm and increases or decreases the IAC duty cycle in order to achieve the desired rpm.
On applications v air-assisted injectors, the IAC valve (Figure 119) likewise supplies a small amount of air into the course of the fuel injectors. The jet of wait causes rise in fuel atomization at low speed and also light fill conditions.NOTE : The IAC Valve Assembly is NOT adjustable and can not BE CLEANED.The IAC valve (part of throttle body assembly) has an inner diode on some applications. If the internal diode is measure up in overcome terminal position with a digital multimeter, there will certainly be an incorrect or an adverse reading. The is crucial that the adjustment component and harness connectors correctly oriented. Diagnostic procedures emphasize this importance.The PCM offers the IAC valve assembly to control:No touch begin Cold engine fast idle for quick warm-up Idle (corrects because that engine load) Stumble or stalling on deceleration (provides a dashpot function) Over-temperature idle boost. Air aid to Injectors.Testing and also InspectionIdle Air control Valve Test open up the hood. Verify the condition by operation the auto for a short time. NOTE: crucial symptom is elevated idle rate while noise is occurring. "Snapping" the throttle can induce the noise.Inspect the IAC valve. If physical proof of air pollution exists, download a new IAC valve. If the noise is occurring, either location an EngineEAR probe close to the IAC valve and the inlet tube, or develop a 6.35 (0.25 min) - 12.7 mm (0.50 in) waiting gap in between the inlet tube and the clean air tube. If the IAC valve is making the noise, install a brand-new IAC valve. Check the automobile for typical operation. Removal Disconnect the battery ground cable.
Remove the Idle Air regulate (IAC) solenoid.1 eliminate the electrical connector.
See more: How Many Liters Are In A Megaliter S To Liters Conversion Tool
2 remove the bolts and also the IAC solenoid. INSTALLATION to install, reverse the removal procedure