Intake Manifold Temperature Sensor for 1997-2008 Ford F-150 & More - Standard Ignition AX31

Keep your engine computer informed of incoming air temperature with the Standard Ignition Engine Intake Manifold Temperature Sensor, part number AX31. It fits many vehicles, among them the 1997-2008 Ford F-150 4.2L / 4.6L / 5.4L, 1996-2004 Ford Mustang 3.8L / 4.6L / 5.4L and 1997-1999 Ford F-250 4.6L / 5.4L, and is a direct-fit replacement for the listed applications.

The sensor measures the temperature of the air in the intake manifold and sends that signal to the engine control module. The module combines this reading with other sensor inputs to help set the air-fuel ratio.

• Part type: engine intake manifold temperature sensor
• Quantity per application: the listed applications use one sensor
• Engine coverage: the listed engines vary by vehicle and year, so check yours in the "Vehicles it fits" section.
• Full fitment: see the "Vehicles it fits" section for every listed vehicle and engine

Signs this sensor may need replacing include a lit check engine light, rough idle, hesitation, hard starting or reduced fuel economy. These symptoms can have other causes, so diagnose the sensor and its circuit before replacing anything. If a failed intake manifold temperature sensor is the cause, AX31 replaces it.