{"product_id":"standard-ignition-ac478-idle-air-control-valve","title":"Standard Ignition AC478 Idle Air Control Valve","description":"\u003ch2\u003eReliable Idle Air Control Valve for Toyota Avalon and Sienna\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition AC478 Idle Air Control Valve is designed to maintain proper engine idle speed in Toyota Avalon and Sienna models. This component ensures smooth engine performance by regulating airflow during idle conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Toyota Avalon and Sienna vehicles\u003c\/li\u003e\n\u003cli\u003ePart number AC478 for precise identification\u003c\/li\u003e\n\u003cli\u003eControls engine idle speed by managing airflow\u003c\/li\u003e\n\u003cli\u003eDirect replacement for factory idle air control valves\u003c\/li\u003e\n\u003cli\u003eDurable construction for consistent operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Overview and Functionality\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition AC478 Idle Air Control Valve plays a critical role in the fuel injection system by regulating the amount of air entering the engine when the throttle is closed. This helps maintain a stable idle speed, preventing stalling and rough idling. Designed specifically for Toyota Avalon and Sienna models, this valve meets OEM specifications to ensure proper fit and function.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the AC478 Idle Air Control Valve\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEngine stalling or rough idle\u003c\/li\u003e\n\u003cli\u003eUnstable or fluctuating idle speed\u003c\/li\u003e\n\u003cli\u003eDifficulty starting the engine\u003c\/li\u003e\n\u003cli\u003eCheck engine light related to idle control\u003c\/li\u003e\n\u003cli\u003eReduced fuel efficiency due to improper air regulation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Standard Ignition AC478 Idle Air Control Valve should be performed with the engine off and cooled down. Ensure the mounting surface is clean before installation to prevent air leaks. It is recommended to check the electrical connector and wiring for damage prior to installation. After replacement, allow the engine control module to recalibrate idle settings by running the engine through a warm-up cycle.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eStandard Ignition parts are manufactured to meet or exceed OEM standards, providing reliable performance for Toyota Avalon and Sienna vehicles. The AC478 Idle Air Control Valve undergoes rigorous quality control testing to ensure durability and proper operation. Warranty coverage details are available through Standard Ignition and typically include protection against defects in materials and workmanship.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":44498568577205,"sku":"FBHK-AC478","price":150.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_AC478_Fro_606395d2-851c-4087-b179-76dbf87421c9.jpg?v=1775021243","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-ac478-idle-air-control-valve","provider":"PartCatalog","version":"1.0","type":"link"}