Many current Ford and Lincoln vehicles — including the F-150, Escape, Explorer, Edge, Ranger, Expedition, and several Lincoln SUVs — use an Air Charge Temperature (ACT) sensor, also called an Intake Air Temperature (IAT) sensor, to measure how hot or cold the air entering the engine is. This reading helps the ECU calculate the correct fuel mixture and ignition timing for current conditions. When this sensor fails or drifts out of calibration, the engine can't compensate properly, leading to a range of drivability issues.
1. Rough Idle in Changing Weather
A sensor sending inaccurate readings can cause the engine to run rich or lean depending on actual temperature, leading to a rough or inconsistent idle, especially during seasonal changes.
2. Hesitation or Poor Throttle Response
Since the ECU relies on air temperature data to fine-tune fueling, a failing sensor can cause hesitation or sluggish throttle response.
3. Reduced Fuel Economy
Incorrect air temperature data can cause the engine to run richer than necessary, quietly reducing your MPG over time.
4. Check Engine Light with IAT-Related Codes
Codes like P0110 through P0113 (Intake Air Temperature Circuit) point directly to a failing ACT/IAT sensor.
5. An Important Exception: Mustang GT
If you drive a Mustang GT, note that this specific sensor isn't compatible — the GT uses an integrated MAF/IAT sensor design instead, located in the air intake duct.
Why Genuine Motorcraft Matters
The DY-1267 is built to Ford's exact calibration specification for each application. Off-spec aftermarket sensors can introduce small inaccuracies that translate into rough running or reduced fuel economy — issues that are difficult to diagnose because the sensor still technically functions, just not correctly.
👉 Shop the Genuine Motorcraft DY-1267 Air Charge Temperature Sensor — free worldwide shipping, and a free step-by-step install video included with every order.