{"product_id":"standard-ignition-as91-manifold-absolute-pressure-sensor","title":"Standard Ignition AS91 Manifold Absolute Pressure Sensor","description":"\u003ch2\u003eReliable Manifold Absolute Pressure Sensor for Ford Vehicles\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition AS91 Manifold Absolute Pressure Sensor is designed to provide accurate pressure readings for Ford trucks, including the F-150, F-150 Heritage, and Ranger models. This sensor helps maintain optimal engine performance by monitoring manifold pressure and ensuring proper air-fuel mixture adjustments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Ford F-150, F-150 Heritage, and Ranger models\u003c\/li\u003e\n\u003cli\u003ePart number AS91 for precise identification and fitment\u003c\/li\u003e\n\u003cli\u003eMeasures manifold absolute pressure to support engine control systems\u003c\/li\u003e\n\u003cli\u003eDirect replacement sensor for emission control applications\u003c\/li\u003e\n\u003cli\u003eManufactured by Standard Ignition, a trusted name in automotive sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Functionality\u003c\/h2\u003e\u003cp\u003eThe AS91 Manifold Absolute Pressure Sensor from Standard Ignition is engineered to accurately detect the pressure inside the intake manifold of Ford trucks such as the F-150 and Ranger. This data is critical for the engine control unit (ECU) to calculate air density and adjust fuel injection accordingly. Proper sensor function helps maintain engine efficiency, reduce emissions, and improve drivability. The sensor is designed to meet OEM specifications, ensuring reliable performance and compatibility with the vehicle’s emission control system.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cp\u003eThis sensor is used primarily in emission control systems to monitor manifold pressure. It can help address several engine performance issues, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eErratic engine idling or stalling\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy due to incorrect air-fuel mixture\u003c\/li\u003e\n\u003cli\u003eCheck engine light triggered by faulty pressure readings\u003c\/li\u003e\n\u003cli\u003eReduced engine power or hesitation during acceleration\u003c\/li\u003e\n\u003cli\u003eFailed emissions tests related to sensor malfunction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Standard Ignition AS91 sensor on compatible Ford F-150, F-150 Heritage, or Ranger models, ensure the engine is cool and the ignition is off. Disconnect the battery before removal to prevent electrical issues. Carefully unplug the old sensor and avoid damaging the wiring harness. Install the new sensor securely and verify all connections are tight. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eStandard Ignition manufactures the AS91 Manifold Absolute Pressure Sensor to meet strict quality standards. Each sensor undergoes rigorous testing to ensure durability and accurate performance. This part is backed by a limited warranty, providing coverage against defects in materials and workmanship under normal use conditions.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":44503302471861,"sku":"FBHK-AS91","price":66.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_AS91_Fro.jpg?v=1775021969","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-as91-manifold-absolute-pressure-sensor","provider":"PartCatalog","version":"1.0","type":"link"}