BRAND NEW OEM Quality Idle Air Control (IAC) Valve / IDLE SPEED MOTOR TO SUIT HYUNDAI / KIA G4GC ENGINES

TO SUIT:

OEM#

3515023900, 3515023700,35150-23900, 35150-23700

PACKAGE INCLUDES:

1 X OEM Quality Idle Air Control (IAC) Valve. (3 PIN PLUG).

ABOUT YOUR VEHICLE'S IDEAL AIR CONTROL (IAC) VALVE

The Idle Air Control (IAC) valve is a crucial component in modern automotive engines. It regulates the amount of air that bypasses the throttle plate, allowing the engine to maintain a consistent idle speed, especially when loads fluctuate. The valve adjusts based on various factors like engine temperature, air conditioning use, and electrical load to prevent stalling and ensure smooth operation. If faulty, symptoms may include erratic idle speeds, stalling, or poor engine performance. Regular maintenance and occasional cleaning can help prolong its lifespan and ensure optimal engine performance.

Common Failure Symptoms

Stalling when the engine is idling
Rough or unsteady idling
Extreme RPM drops during a slowdown
The engine may shut off if the AC is turned on
Check Engine Light is on

Common Causes of Failures

General solenoid failure from everyday use
Wear and tear from corrosion
Clogged valve

COMMON QUESTIONS

Will this stop my iLoad from stalling at traffic lights?
Yes. When the IAC valve fails it cannot maintain the target idle RPM causing the van to stall when stopping or when the AC compressor engages.

Why choose this premium valve for my work van?
Commercial vehicles require maximum reliability. This premium OE-quality valve features high-resistance internal coils designed to withstand intense engine bay heat and constant stop-start driving.

Does it fit the Diesel iLoad?
No this valve is strictly for the 2.4L Petrol (G4KG) variants.

[01/06 – 12/11] HYUNDAI ELANTRA HD 2.0L 4cyl G4GC 105kW
[01/00 – 12/06] HYUNDAI ELANTRA XD 2.0L 4cyl G4GC 105kW
[01/09 – 12/12] HYUNDAI I30 FD 2.0L 4cyl G4GC 105kW
[01/07 – 12/12] HYUNDAI I30 FD 2.0L 4cyl G4GC 105kW
[01/08 – 12/16] HYUNDAI ILOAD TQ-V 2.4L 4cyl G4KG 129kW
[01/08 – 12/16] HYUNDAI IMAX TQ-W 2.4L 4cyl G4KG 129kW
[01/05 – 12/10] HYUNDAI TUCSON JN 2.0L 4cyl G4GC 104kW
[01/07 – 12/10] HYUNDAI TUCSON JN 2.0L 4cyl G4GC 104kW

Identification
SKU	CIA026
Barcode #	9330544042619
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CIA026
Reference OEM Number	3515023900
Other OEM Numbers	3515023900, 3515023700, 35150-23900, 35150-23700
Related Part Numbers	IAC542, IAC9201, CIA026, IAC542GEN
Product Specifics
Product Type	Ideal Speed Air Control Valve
Type	Idle Speed Controller
Features	Direct Fit
Manufacturer Warranty	1 Year
Number of pins	3 -pin connector
Connector Shape	rectangular
Rated Voltage	12 V
Operating Mode	Electric
Other Details
Note	Verify fitment using the OEM part number before ordering.
Unit Of Measure	ea

What does an idle air control valve (IAC) do?

The idle air control (IAC) valve regulates airflow around the throttle plate when the engine is at idle, allowing the ECU to maintain a stable idle speed regardless of engine load. When the air conditioning compressor engages, the steering is turned to full lock, or the engine is cold, the ECU opens the IAC valve further to allow more air and prevent the idle from dropping. On drive-by-wire vehicles this function is handled by the electronic throttle body rather than a separate IAC valve.

What are the symptoms of a failing IAC valve?

Common symptoms include rough or unstable idle where the engine hunts or surges between high and low RPM, stalling when coming to a stop or at traffic lights, idle speed that is consistently too high or too low, stalling when accessories such as air conditioning are switched on, and difficulty starting from cold. A Check Engine light with idle speed or IAC circuit codes may also be present.

Can I clean the IAC valve instead of replacing it?

Yes - if the IAC valve is clogged with carbon buildup rather than mechanically failed, cleaning with throttle body cleaner can restore correct operation. Remove the valve, spray cleaner through the passages, and allow it to dry completely before reinstalling. However if the valve solenoid has failed electrically or the valve body is cracked or worn, cleaning will not restore function and replacement is required. An OBD2 scanner showing an IAC circuit fault code indicates an electrical failure rather than a blockage.

How do I test an IAC valve?

With an OBD2 scanner in live data mode, the idle speed should be stable within the specified range (typically 650 to 850 RPM for a warm engine). You can also use a multimeter to test the solenoid resistance at the IAC connector - compare to the specification in your vehicle service manual. On some vehicles the scan tool can command the IAC valve to specific positions as an actuator test, which will confirm whether it is responding correctly to ECU commands.

Will a faulty IAC valve cause the engine to stall?

Yes - stalling is one of the most common symptoms of a faulty IAC valve. When the throttle closes at idle and the IAC valve cannot supply sufficient bypass air to maintain idle speed, the engine RPM drops below the minimum and stalls. This is particularly common when decelerating to a stop, when the air conditioning compressor engages, or immediately after a cold start before the engine has warmed up.

Does the IAC valve need to be relearned after replacement?

Many vehicles require a throttle or idle relearn procedure after replacing the IAC valve. This allows the ECU to relearn the correct idle position for the new valve. The procedure typically involves clearing fault codes, starting the engine, and allowing it to idle undisturbed for a specified period while the ECU recalibrates. Some vehicles require a more detailed relearn using a scan tool. Check your vehicle service documentation for the specific procedure before returning the vehicle to service.