Chrysler LeBaron Throttle Position Sensor (1986-1995) – A Comprehensive Guide
If your LeBaron is hesitating, stalling, or has a rough idle, the throttle position sensor could be the culprit.
- A failing TPS on a LeBaron causes common issues like hesitation, stalling, rough idle, and poor acceleration.
- Replacement is a simple, beginner-friendly DIY job that takes less than an hour with basic tools.
- There are no specific recalls for the TPS, but you should always verify your VIN for other potential safety issues.
- Quality aftermarket brands like Delphi, NGK, or Standard Motor Products offer reliable and affordable replacements.
Is My LeBaron's Throttle Position Sensor Failing?
A bad TPS can cause a variety of engine performance problems that can be frustrating and sometimes unsafe. Because the 1986-1995 LeBaron models span different engine technologies, from turbocharged 4-cylinders to V6 engines, symptoms can vary slightly but generally point to the same faulty component. 🎬 Watch: How to test your TPS to confirm it's failing. Recognizing these signs early can save you from bigger headaches down the road.
Common Symptoms Include:
- Hesitation or Stalling: The engine may stumble, hesitate, or stall completely when you press the gas pedal, especially from a stop.
- Rough or Unstable Idle: Your LeBaron might idle too high or too low, or the idle speed may surge up and down on its own.
- Poor Acceleration: The car may feel sluggish and lack power, struggling to get up to speed.
- Jerking or Surging: You might feel the car bucking or surging unexpectedly while driving at a steady speed.
- Check Engine Light: While not all early models will throw a code, a failing TPS can trigger the Check Engine Light on later models. Common codes include P0120, P0121, P0122, P0123, and P0124.
- Automatic Transmission Problems: On automatic models, a bad TPS can cause rough, delayed, or improper gear shifts.
A Note on Recalls and TSBs
Searches of the National Highway Traffic Safety Administration (NHTSA) database did not reveal any specific recalls for the throttle position sensor on 1986-1995 Chrysler LeBaron models. While there are recalls for this vehicle range, they pertain to other components like fuel lines on turbo models and instrument panel clusters. Always check your specific Vehicle Identification Number (VIN) on the NHTSA website for any open recalls.
Choosing the Right Aftermarket TPS
For a vehicle like the 1986-1995 LeBaron, the original Mopar parts can be difficult to find. Fortunately, the aftermarket offers a wide selection of new throttle position sensors. These parts are generally reliable and a cost-effective solution. Aftermarket brands often fall into different quality tiers.
Premium Brands (Higher Tier):
- Delphi: Often an Original Equipment (OE) manufacturer for many car brands, Delphi parts are known for their quality and reliability. They are a strong choice if you're looking for as-close-to-factory performance as possible.
- NGK/NTK: As a major sensor manufacturer, NTK (the sensor division of NGK) produces high-quality components that are well-regarded in the industry.
- Standard Motor Products (SMP): A long-standing brand in the aftermarket, SMP offers parts that are generally considered reliable. They often have multiple product lines, so aim for their primary line over budget options if available.
Standard/Economy Brands (Mid to Lower Tier):
- Walker Products, Motorad, Global Parts, True Tech, Replacement: These brands provide a functional and affordable alternative. They are a good option for budget-conscious repairs, especially on an older vehicle. While they may not have the same brand recognition as the premium tier, they meet or exceed original equipment standards for fit and function.
OEM vs. Aftermarket Quality
For a part like the TPS on an older vehicle, a quality aftermarket sensor from a reputable brand like Delphi, NGK, or Standard Motor Products is a perfectly acceptable and often more practical choice than hunting for a rare New Old Stock (NOS) Mopar part. The technology is well-established, and these brands often produce parts that meet or exceed the original specifications. Avoid unbranded, no-name parts from online marketplaces, as their quality can be inconsistent.
Cost of Replacing a LeBaron TPS
The cost to replace the throttle position sensor is relatively low. The part itself is affordable, and the labor is straightforward for a professional mechanic or an experienced DIYer.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Part | $33 - $76 |
| Shop Labor | $49 - $72 |
| Total Professional Replacement | $139 - $162 |
Frequently Asked Questions
Is replacing the TPS a difficult DIY job?
No, for most people with basic tools, this is a very easy job. The TPS is located on the side of the throttle body, held on by two screws. The process involves disconnecting the battery, unplugging the electrical connector, removing the two screws, swapping the sensor, and reassembling. 🎬 See this walkthrough for a step-by-step TPS replacement guide. It typically takes less than an hour.
Do I need to calibrate or adjust the new TPS?
Most aftermarket TPS sensors for these LeBaron models do not require manual adjustment. They are designed to work correctly right out of the box. However, after installation, it's a good practice to disconnect the battery for about 15 minutes to reset the engine computer, allowing it to "relearn" the new sensor's parameters.
🎬 Watch: What to do after installing your new sensor.Can I just clean my old throttle position sensor?
No, the TPS is a sealed electronic sensor. The problems are usually caused by internal wear on its electrical contacts, not dirt. While you should clean a dirty throttle body, cleaning the sensor itself will not fix it. If it's faulty, it must be replaced.
Are there different TPS parts for different LeBaron engines?
Yes, it's very likely. The 1986-1995 period covers multiple engines, including the 2.2L, 2.5L (some turbocharged), and the 3.0L V6. Always verify that the part you are buying fits your specific year, model, and engine. Use the compatibility checker on the parts website to ensure you order the correct sensor.
Helpful Videos
Technical Specifications
OEM Part Numbers: 4626051
The TPS for this era is a potentiometer-style sensor that changes resistance as the throttle plate moves. It typically uses a 3-pin connector for power, ground, and signal output.
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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.
- Chrysler LeBaron: