Mass Air Flow Sensor Guide for the 2005-2010 Buick Allure
Solve rough idling, poor fuel economy, and stalling on your Allure by choosing the right replacement Mass Air Flow sensor.
- You MUST buy the correct MAF sensor for your Allure's engine (3.6L V6 is different from the 3.8L V6 and 5.3L V8).
- Before replacing, try cleaning the sensor with dedicated MAF cleaner and replace your engine air filter.
- For long-term reliability, choose an OEM-quality brand like ACDelco, Delphi, Bosch, or NTK.
- On 3.6L V6 models, a known PCV system issue can cause MAF sensor contamination; this should be inspected.
Is Your Buick Allure Running Rough? It Could Be the MAF Sensor
If your 2005-2010 Buick Allure is hesitating, idling poorly, or getting bad gas mileage, a failing Mass Air Flow (MAF) sensor is a common culprit. This sensor tells your engine's computer how much air is coming in, which is vital for a smooth-running engine. When it gets dirty or fails, the computer gets the wrong information, leading to noticeable problems. Replacing it is a simple, DIY-friendly job that can restore your car's performance.
Symptoms of a Bad MAF Sensor
A faulty MAF sensor can make your car difficult to drive. Here are the most common signs:
- Check Engine Light: This is often the first sign. You will likely see trouble codes like P0101 (MAF Sensor Performance) or P0102 (MAF Sensor Circuit Low). 🎬 See this breakdown of P0101 code causes and symptoms.
- Rough Idle: The engine may shake, vibrate, or sound uneven when the car is stopped.
- Hesitation and Stalling: Your Allure might stumble or jerk when you accelerate. In some cases, the engine may stall completely, especially when coming to a stop or shortly after starting.
- Poor Fuel Economy: An incorrect air reading often causes the engine to use more fuel than necessary, so you'll find yourself at the gas pump more often.
- Lack of Power: The car may feel sluggish and struggle to accelerate because the engine isn't getting the right fuel mixture for the power demand.
- Black Smoke from Exhaust: This is a clear sign the engine is running rich (too much fuel), which can be caused by a bad MAF sensor reading.
Important: Check Your Engine Before You Buy!
The 2005-2010 Buick Allure was available with three different engines, and they use different MAF sensors. Ordering the wrong part is a common mistake. Always verify your engine size before purchasing.
- 3.8L V6 & 5.3L V8: 🎬 Watch: 3.8L Buick Allure MAF sensor location and replacement guide. These engines typically share the same MAF sensor. Look for OEM part numbers like 15911983 or 19351887.
- 3.6L V6: This engine uses a different sensor. Look for OEM part numbers like 12566846 or 15865791.
Choosing the Right Aftermarket MAF Sensor
When it comes to engine sensors, quality matters. A cheap, poorly calibrated sensor can cause new problems or fail quickly. Here’s a breakdown of available brands to help you choose.
Tier 1: OEM Quality & Reliability
- ACDelco: As the original GM parts supplier, ACDelco is the benchmark for fit and performance. Choosing their "GM Genuine" line guarantees you are getting the exact same part your car was built with.
- Bosch & Delphi: Both are major OEM manufacturers for many car brands. Delphi was once part of GM, and their parts are widely considered to be of equal quality to ACDelco. Forum users frequently recommend Delphi as a reliable, cost-effective alternative to the dealer part.
- NGK/NTK: NTK is the sensor division of NGK, a brand known for quality ignition parts. They are a trusted name for engine sensors and a solid choice.
Tier 2: Good Value Aftermarket
- Spectra & Walker Products: These brands offer a balance of affordability and performance. While generally reliable, some user reviews suggest they can occasionally be inconsistent compared to Tier 1 brands. They can be a good option if budget is a primary concern.
Tier 3: Budget & Remanufactured Options
- Cardone (Remanufactured): Cardone remanufactures original parts. While this can be a budget-friendly and eco-conscious choice, quality can be inconsistent. Some users report issues with remanufactured sensors.
- Store Brands & Unbranded Parts: Be cautious with the cheapest options available. Forum discussions show that some low-cost sensors can be poorly calibrated, causing the car to run even worse than before or fail to start at all.
Pro Tip: Before replacing the sensor, try cleaning it. Sometimes, oil or dirt on the sensor wire is the real problem. Use a dedicated Mass Air Flow sensor cleaner and spray the delicate wires inside the sensor. Never touch the wires. Also, always install a new engine air filter when you replace your MAF sensor to prevent contamination of the new part.
Cost of Replacing a Buick Allure MAF Sensor
| Part Type | Estimated Cost |
|---|---|
| New OEM (ACDelco) | $75 - $155 |
| New Aftermarket | $55 - $154 |
| Used OEM | $40 - $75 |
| Shop Labor | $50 - $100 |
Cost estimates are approximate and can vary by location and supplier.
Frequently Asked Questions
Can I just clean my old MAF sensor? 🎬 Watch this video to learn how to clean your sensor properly.
Yes, and you should try it first. Often, the sensor is just dirty. Buy a can of MAF-specific cleaner and follow the instructions. If cleaning doesn't solve the problem, or if the fix is only temporary, you likely need a new sensor.
Is a professional diagnosis needed?
While not always necessary, it can save you money. For the 3.6L V6 engine, GM issued a Technical Service Bulletin (TSB PI0746B) about a PCV issue that can coat the MAF sensor in oil, causing failure symptoms. A mechanic can check for this and other issues like vacuum leaks, which can mimic a bad MAF sensor.
My car is stalling. I heard there was a recall?
Yes, but it's likely not for the MAF sensor. There is a major safety recall (NHTSA #14V355000) for the ignition switch on 2005-2009 Allure/LaCrosse models. A heavy keychain can cause the switch to move out of the 'Run' position, shutting off the engine. This can feel like a stall caused by a bad sensor, so it's worth checking if this recall has been performed on your vehicle.
What happens if I don't replace a bad MAF sensor?
Driving with a bad MAF sensor can cause long-term damage. An engine running too rich can foul spark plugs and damage the expensive catalytic converter over time. You will also suffer from poor performance and high fuel costs, and the car may become unreliable, stalling at inconvenient times.
Helpful Videos
![[HOW TO] Clean Mass Air Flow Sensor (MAF) on 2015+ Colorado/Canyon](https://img.youtube.com/vi/uRQ3NkssDOc/mqdefault.jpg)
Technical Specifications
OEM Part Numbers: 15911983 19351887 12574398 12566846 15865791
Hot-wire type sensor, typically with a 5-pin oval connector. Measures air mass and includes an integrated Intake Air Temperature (IAT) sensor.
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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.
- Buick Allure: