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Genuine Lexus ES300 Idle Control Valve
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5 Idle Control Valves found
Lexus ES300 Idle Speed Control Valve Assembly
Part Number: 22270-20050$279.11 MSRP: $386.88You Save: $107.77 (28%)Ships in 1-2 Business Days
Lexus ES300 Idle Speed Control Valve Assembly
Part Number: 22270-20020$277.43 MSRP: $384.55You Save: $107.12 (28%)Ships in 1-3 Business DaysLexus ES300 Idle Speed Control Valve Assembly
Part Number: 22270-20040$282.05 MSRP: $384.55You Save: $102.50 (27%)Ships in 1-3 Business Days
Lexus ES300 Idle Control Valve
The Lexus ES300 Idle Control Valve maintains the steady idling of the sedan by allowing the engine to take only the correct volume of air when the throttle plate is almost shut. The Idle Control Valve, controlled by the engine computer, opens a small bypass passage in the throttle body with an electric servo motor, lead screw, and plunger to add or remove airflow to maintain a smooth rpm with the extra load of headlights, A/C, or steering. The early Lexus ES300 models combined a throttle-body injection unit with an integral Idle Control Valve located above the butterfly, whereas later ES300 models applied multi-port fuel injection, with the Idle Control Valve fitted to a dedicated side port that directs air around the plate. Although this relocation takes place, both styles are based on the same purpose and the same digital stepper movement, but the newer installation is quicker and lets the Lexus stability and traction systems adjust idle. Dirt, carbon, and air leaks are the main adversaries, and frequent cleaning tends to restore a sluggish Idle Control Valve, while expensive replacement is inevitable throughout the high-mile Lexus ES300 models.
Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus ES300 Idle Control Valve available on LexusPartsNow.com. Our OEM Lexus ES300 Idle Control Valve come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!
Lexus ES300 Idle Control Valve Parts Questions & Experts Answers
- Q: What is the function of the Idle Control Valve and how to check and replace on the Lexus ES300?A:First of all, the engine idle speed is controlled by the Idle Control Valve, which regulates the airflow bypassing the throttle plate into the intake manifold. The IAC valve is controlled by the PCM and adjusts the air intake based on engine demands and operating conditions. To check the IAC valve, apply the parking brake, shift the transaxle to Neutral or Park (automatic), and block the drive wheels. Install a tachometer and start the engine, comparing the idle speed to specifications. If the engine speed changes, the IAC valve is functioning properly; then, measure the IAC valve resistance and if the resistance does not meet specifications, replace the IAC valve. If it does, further investigate the wiring or PCM. If the IAC operates correctly, inspect the wiring harness since the PCM may be defective and should be checked. For replacement, remove the throttle body, detach the IAC valve and gasket, and reinstall using a new gasket.
