Acura TSX Manifold Absolute Pressure (MAP) Sensor Guide for 2004-2014 Models
Fix poor performance and bad gas mileage in your TSX by understanding and replacing a faulty MAP sensor.
- A bad MAP sensor will cause a Check Engine Light, rough idle, poor acceleration, and bad gas mileage.
- For a reliable repair, choose an OEM-equivalent brand like Denso or a reputable aftermarket brand like Standard Ignition (SMP) or NGK.
- Replacement is extremely easy and can be done in minutes with basic tools, making it a great DIY job to save money.
- Do not try to clean the MAP sensor; it is a sealed electronic part that must be replaced when it fails.
Is Your TSX MAP Sensor Failing?
A bad Manifold Absolute Pressure (MAP) sensor can cause a lot of frustrating problems. While it might not leave you stranded, it will make your Acura TSX run poorly. Because this sensor is critical for the air-fuel mixture, a faulty one can cause noticeable issues, hurt your fuel economy, and could even damage your expensive catalytic converter over time if ignored.
Common Symptoms of a Bad MAP Sensor
When a MAP sensor fails, the ECU gets incorrect information and can't manage the engine properly. Here are the most common signs you'll notice in your TSX:
- Check Engine Light: This is the most common sign. A code scan will likely show codes like P0106, P0107, or P0108. 🎬 Watch: See how these codes affect your engine's performance.
- Rough Idle: Your engine may shake, vibrate, or sound uneven when you're stopped. It might even stall at low speeds.
- Poor Acceleration and Hesitation: Your TSX might feel sluggish, weak, or jerky when you press the gas pedal. This can feel dangerous when trying to merge into traffic.
- Bad Fuel Economy: If the sensor is sending bad data, the engine will use too much fuel. You'll notice you're filling up your gas tank more often.
- Black Smoke from Exhaust: In some cases, you may see black smoke coming from the tailpipe, which is a clear sign the engine is running too rich (burning too much fuel).
Choosing the Right Aftermarket MAP Sensor
For a critical engine sensor like the MAP sensor, quality matters. While budget parts are available, they can be unreliable and cause the same problems to return. Here’s a breakdown of the brands available:
- OEM-Equivalent Brands (Recommended): Denso and NGK (NTK) are well-known original equipment manufacturers for Honda and Acura. Choosing one of these brands is the safest bet for a reliable, long-lasting part that performs just like the original.
- Quality Aftermarket Brands: Brands like Standard Ignition (SMP), Delphi, and Spectra Premium have a reputation for producing reliable parts that meet or exceed OEM specifications. They are a solid choice if an OEM-equivalent brand is not available.
- Performance Brands: Skunk2 Racing offers parts for modified and high-performance engines. This is not a standard replacement part and should only be considered if your TSX is heavily modified (e.g., turbocharged).
- Value Brands: Brands like Walker Products, Facet, and Global Parts offer a lower-cost alternative. However, for a sensor this important, saving a few dollars now could lead to more headaches later. It's generally best to stick with a more reputable brand.
Cost of Replacing an Acura TSX MAP Sensor
Replacing the MAP sensor is a relatively inexpensive repair. The part itself is affordable, and the labor is minimal because it's so easy to access.
| Part/Service | Estimated Cost |
|---|---|
| New OEM MAP Sensor | $70 - $135 |
| New Aftermarket MAP Sensor | $25 - $116 |
| Shop Labor | $35 - $55 |
| Total DIY Cost (Aftermarket) | $25 - $116 |
| Total Professional Replacement | $95 - $190 |
Frequently Asked Questions
Where is the MAP sensor on my 2004-2014 Acura TSX?
The MAP sensor is located directly on the intake manifold. On the 2.4L engine, it's typically on the throttle body, which is where the large black air intake tube connects to the engine. It is a small, black plastic sensor held in by one or two small bolts.
Can I just clean my MAP sensor?
No, it is not recommended to clean a MAP sensor. Unlike a Mass Airflow (MAF) sensor, which can often be cleaned, the MAP sensor is a sealed electronic unit. Spraying chemicals into it can cause permanent damage. If it has failed, it must be replaced.
Is the MAP sensor the same for all 2004-2014 TSX models?
No, there are a few different part numbers used across the 2004-2014 model years. The first generation (2004-2008) and second generation (2009-2014) may use different sensors. It is critical to enter your vehicle's year and model to ensure you order the correct part number for your specific TSX.
What's the difference between a MAP and a MAF sensor?
Your TSX uses both sensors to get the most accurate engine reading. The Mass Airflow (MAF) sensor measures the volume of air entering the engine. The Manifold Absolute Pressure (MAP) sensor measures the pressure (or vacuum) inside the intake manifold, which tells the computer the engine's load. Together, they give the ECU a complete picture to calculate the perfect air-fuel ratio.
Are there any recalls for the Acura TSX MAP sensor?
No, there are no specific recalls or common Technical Service Bulletins (TSBs) from Acura for MAP sensor failure on the 2004-2014 TSX. Failures are typically due to age and normal wear and tear.
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Technical Specifications
OEM Part Numbers: 37830-PGK-A01 37830-PNC-003 37830-RNA-A01
The MAP sensor for the Acura TSX is a 3-pin electronic sensor that mounts directly to the intake manifold or throttle body. It is crucial to verify the correct OEM part number for your specific model year, as different sensors were used throughout the 2004-2014 production run.
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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.
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