OEM 39722 Air control valve For Chevrolet New Sail

Idle Air Control Valve Car OEM 39722 for Chevrolet New Sail 1.2-1.4 Auto Engine Part Stepper Motor Iacv

What is the car idle air control valve? 

The car idle air control valve enables the engine to idle smoothly after startup or when the vehicle comes to a stop. It works by allowing air to bypass a closed throttle plate when the engine is at idle and, for this reason, is also referred to as the air bypass valve. 


What does the car idle air control valve do ?

The throttle body butterfly valve is closed when you're not pressing down on the accelerator pedal, allowing no air to enter the engine. The idle air control valve bypasses air around the closed throttle valve and sends it to the engine, allowing it to receive the air it needs to combust fuel while idle. 

The car idle air control valve only works when the throttle body valve is closed. So every time your foot is off the pedal, the IAC valve immediately comes into play. The IAC car idle control valve may be a part of or separate from the throttle body, depending on its design. In most cases, it's attached to the throttle body. 

Item specifics

Fits Make & Model

Chevrolet New Sail

Product Features
Strong durability: The air control valve car is made of high quality materials, it has strong durability and abrasion resistance, and has a long service life.
Wide applicability: The air control valve car is suitable for various types of automobile engines, can meet the needs of different models, and has good versatility.
Energy saving and environmental protection: to ensure that the engine is fully burned in the idling state, reduce exhaust emissions, and achieve the effect of energy saving and environmental protection.
Automatic control: The air control valve car automatically control the engine air intake to adjust the engine idling speed without manual intervention, simplifying the operation process.
High precision: The high-precision adjustment function can accurately control the idling speed of the engine to ensure the stability and economy of the engine.

FAQs

1. What is an Idle Air Control Valve Car and what is its function in the car?

The idle air control valve (IAC or IACV) also called idle speed control (ISC) or stepper motor is used on fuel injected engines to control idle speed. The stepper motor type of IAC features a pintle, which is used to either block or open throttle air passages. The powertrain control module (PCM) controls stepper motor operation.

2. Which are the symptoms of a broken air control valve car/Stepper Motor?

Not surprisingly, a broken IAC often results in engine idle problems. An engine that is idling too fast or too slow may point to a faulty IAC. An engine that stalls out may indicate IAC problems as well.

3. How can I check, if my car air control valve/Stepper Motor is broken?

Typically, if there is a problem with the IAC or its control circuit, the PCM will set a diagnostic trouble code (DTC) and turn on the check engine light (CEL). If the light is on, you can plug a diagnostic scan tool into the diagnostic port under the dash and read the stored trouble codes. If the codes indicate a problem with the IAC or its circuit, a vehicle specific repair manual should be consulted for further testing.

4. How do I change the car air control valve/Stepper Motor in my car?

IAC replacement varies from vehicle to vehicle, but it is fairly straightforward in most cases. Vehicle specific repair information should be consulted before replacing your IAC car air control valve. Typical IAC replacement is as follows:

• Disconnect the negative battery terminal
• Disconnect the IAC car air contorl valve electrical connector
• Remove the IAC car air control valve attaching screws
• Remove the IAC car air contorl valve assembly
• Install in the reserve order of removal