A Guide to the 2006-2014 Lincoln Navigator Throttle Position Sensor
Solve stalling, hesitation, and rough idling by understanding your Navigator's throttle position sensor.
- You can save significant money by replacing only the aftermarket sensor instead of the entire OEM throttle body assembly.
- Common failure symptoms include stalling at idle, hesitation on acceleration, and erratic shifting.
- This is a simple DIY repair that most owners can complete in under an hour with basic tools.
- Choose a premium aftermarket brand like Standard Ignition or Walker Products for the most reliable, long-term repair.
Is Your Navigator Stalling or Hesitating? It Could Be the TPS.
If you're experiencing sudden engine problems like stalling at stoplights, a shaky or surging idle, or a dangerous hesitation when you try to accelerate, a failing throttle position sensor is a likely culprit. These symptoms are common in the 2006-2014 Lincoln Navigator and the related Ford Expedition. Because this sensor is critical for engine and transmission control, a bad signal can cause a wide range of drivability issues.
OEM vs. Aftermarket: The Most Important Choice You'll Make
For the 2006-2014 Navigator, this is a key issue. The original manufacturer, Motorcraft, often does not sell the throttle position sensor by itself. They prefer to sell the entire electronic throttle body assembly, which includes the sensor. This is a high-quality but very expensive repair.
Fortunately, the aftermarket offers the sensor as a standalone part, which is much more affordable. This allows you to replace only the failed component. For a vehicle of this age, choosing a quality aftermarket sensor is a smart and cost-effective repair strategy.
Pro Tip: Check the Screws
The two small screws holding the TPS to the throttle body are often either Phillips or T20 Torx head. They can be tight and sometimes corrode. Be sure to use the correct size screwdriver or bit to avoid stripping them. A drop of penetrating oil can help if they are stuck.
🎬 See how to replace the sensor without breaking the screwsChoosing the Right Aftermarket Brand
Not all aftermarket parts are created equal. Here’s a breakdown of the brands available to help you choose:
- Premium Aftermarket (Standard Ignition, NGK/NTK, Walker Products): These brands are well-regarded in the industry and focus on meeting or exceeding original equipment (OE) specifications. They use quality materials and perform extensive testing to ensure reliability and accurate performance. Choosing one of these brands is your best bet for a long-lasting repair that closely mimics original performance.
- Quality Aftermarket (Motorad, URO Parts): These brands provide a solid balance of quality and value. URO Parts, for example, specializes in being a reliable alternative to higher-priced genuine parts. They are a good choice for a dependable repair without the premium price tag.
- Value Options (Global Parts, Replacement, True Tech): These brands offer the most budget-friendly solutions. While they can get your Navigator back on the road, they may not have the same level of rigorous testing or material quality as premium brands. They are best for situations where budget is the primary concern.
Known Issues for the 2006-2014 Lincoln Navigator
While no specific recalls have been issued for the throttle position sensor on this vehicle, failure of the electronic throttle body is a widely known issue for Ford's 5.4L V8 engine. Symptoms often start with an erratic idle and can progress to the vehicle entering a "limp mode," where acceleration is severely limited. Since the TPS is integrated into this system, it is a common point of failure.
Cost at a Glance
| New OEM (Motorcraft Assembly) | $250 - $400+ |
| New Aftermarket (Sensor Only) | $56.80 - $112.42 |
| Shop Labor | $75 - $150 |
Frequently Asked Questions
Do I need to replace the whole throttle body?
Not necessarily. If diagnostics confirm the sensor is the problem, buying an aftermarket sensor is a perfectly valid and much cheaper repair. You would only need to replace the entire throttle body if the internal motor fails or if the throttle plate itself is damaged, which is less common.
Is this a difficult part to replace myself?
No, this is a great DIY project for a beginner. The job requires basic hand tools and typically takes less than an hour. You'll need to remove the air intake hose for access, unplug the electrical connector, and remove two screws.
Does the new sensor need to be calibrated?
Yes, a "relearn" procedure is recommended. While some systems adapt on their own, the proper procedure usually involves turning the key to the 'on' position for a set time, then off, then starting the engine and letting it idle for several minutes. This allows the vehicle's computer to learn the new sensor's voltage range for closed and wide-open throttle.
🎬 Watch this video to see the full relearn procedureWhat are the most common symptoms again?
The top signs are a rough or surging idle, hesitation or stumbling when you accelerate, stalling when you come to a stop, and the check engine light or a wrench light on the dash.
🎬 Watch: How to diagnose a bad throttle position sensorHelpful Videos
Technical Specifications
OEM Part Numbers: 6L2Z9B989A 3L5Z9B989AA
Mounts to the side of the electronic throttle body on the 5.4L 3V V8 engine. Typically has a 4-pin electrical connector.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Lincoln Navigator:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Navigator Stalling or Hesitating? It Could Be the TPS.
- OEM vs. Aftermarket: The Most Important Choice You'll Make
- Pro Tip: Check the Screws
- Choosing the Right Aftermarket Brand
- Known Issues for the 2006-2014 Lincoln Navigator
- Cost at a Glance
- Frequently Asked Questions
- 🎟️ Get 5% Off