An Intake Air Temperature (IAT) Sensor monitors the temperature of the air entering the engine. That information lets the engine control unit (ECU) adjust fuel delivery, ignition timing, and emission controls for better drivability, fuel economy, and emissions performance. Replacing a faulty IAT restores accurate airtemperature readings and helps eliminate symptoms like hard starting, rough idle, poor fuel economy, and checkengine lights tied to intake temperature faults. Key benefits Restores accurate engine airtemperature data so the ECU can optimize fuel and ignition settings. Improves coldstart behavior, idle stability, and throttle response when the original sensor is failing. Reduces risk of incorrect air/fuel mixtures that can increase emissions or shorten component life. Simple swap for efficient maintenance: quick diagnosis and replacement get the vehicle back to normal operation. What it does and why you need it Converts intakeair temperature into an electrical signal the ECU uses to adjust engine control parameters. Prevents driveability problems caused by incorrect temperature readings, including rich or lean running conditions and increased fuel consumption. Supports emission control systems by ensuring the ECU gets accurate ambient intake temperature data. Key attributes Functionality: Measures intake air temperature and provides a compatible electrical signal (voltage or resistance) to the vehicle ECU. Form factor: Compact sensor body and probe designed for installation in the intake tract or intake manifold. Durability: Sealed housing to resist contaminants and moisture; connector and wiring designed for enginebay conditions. Performance: Quick response to temperature changes for timely ECU adjustments and consistent engine performance. Compatibility guidance: Intended for vehicles that use an IAT sensor signal to the ECU. Verify vehicle fitment and connector type against your vehicle's original sensor before . Common applications / use cases Routine replacement: a failed or aging IAT sensor during scheduled maintenance or when a diagnostic trouble code points to intakeair temperature issues. Troubleshooting driveability: Use as a direct replacement to remedy symptoms such as rough idle, hard starts, poor fuel economy, or a P0110–P0114 series code (intake air temperature circuit). Performance tuning and intake upgrades: Ensure accurate intake temperature readings after installing aftermarket intakes, coldair systems, or turbo/supercharger components so the ECU can retune fuel and timing properly. Installation notes Typically plugs into the factory wiring harness and mounts in the intake tract or manifold. Confirm correct connector and mounting style for your vehicle. After installation, clear any diagnostic trouble codes and allow the ECU to relearn idle and fueling parameters as needed. guidance Confirm part fitment with your vehicle year, make, and model or consult the OEM part number if available. Choose sensors that list clear compatibility information or come with a fitment guarantee for your specific vehicle to avoid installation issues.