Pontiac G5 Manifold Absolute Pressure (MAP) Sensor Replacement Guide (2007-2010)
Fix poor performance and rough idling in your G5 by understanding and replacing its MAP sensor.
- A failing MAP sensor on a Pontiac G5 commonly causes a rough idle, poor gas mileage, and a Check Engine Light with code P0106.
- Replacement is very DIY-friendly, located on the intake manifold, and takes less than 30 minutes with basic tools.
- For best results and to avoid future issues, use a high-quality aftermarket brand like ACDelco, Delphi, or Bosch.
- Before replacing the sensor, check for vacuum leaks or wiring issues, as these can sometimes cause similar symptoms.
Signs of a Failing MAP Sensor in Your G5
When the MAP sensor on your 2007-2010 Pontiac G5 starts to fail, your car will let you know. The most common sign is the Check Engine Light turning on. You'll often find a diagnostic trouble code like P0106 🎬 Watch this guide on how to fix the P0106 code easily., which points to a problem with the MAP sensor's performance. Other symptoms include a rough or erratic idle, hesitation when you accelerate, and noticeably worse gas mileage. In some cases, you might even see black smoke from the exhaust, which means the engine is running too rich (using too much fuel).
Don't Ignore the Signs
While your G5 will likely still drive with a bad MAP sensor, it's not recommended. Continuing to drive can lead to poor fuel economy, higher emissions, and potentially damage other engine components like the catalytic converter over time.
Choosing the Right Aftermarket MAP Sensor
For the Pontiac G5, the original part is made by ACDelco, which is GM's own parts brand. When choosing a replacement, you have several good options that balance quality and price.
- Premium Aftermarket (OEM-Quality): Brands like ACDelco, Delphi, and Bosch are top choices. They are known for engineering parts that meet or exceed original factory standards. Choosing one of these ensures the best reliability and compatibility, behaving just like the original part.
- Quality Mid-Tier: Brands such as NGK/NTK, Standard Ignition (SMP), and Spectra offer a great balance of performance and value. They are reputable manufacturers that produce reliable sensors that are a good fit for most daily drivers.
- Economy Options: Brands like Walker Products, Facet, and others are budget-friendly choices. While they are more affordable, their long-term durability and performance consistency might not match the premium or mid-tier brands. They can be a viable option for a quick fix on a budget.
Pro Tip: Many mechanics and experienced owners recommend sticking with ACDelco or Delphi for critical sensors like the MAP to avoid compatibility issues and ensure long-term reliability. Sometimes, cheaper sensors can cause new, hard-to-diagnose problems.
Cost of Replacing a Pontiac G5 MAP Sensor
The cost to replace the MAP sensor is reasonable, especially if you do it yourself. The part itself is not expensive, and the job is straightforward.
| Item | Estimated Cost |
|---|---|
| New Aftermarket MAP Sensor | $39.20 - $89.28 |
| New OEM (ACDelco) MAP Sensor | $30 - $50 |
| Shop Labor | $70 - $140 |
| Total (Shop Replacement) | $100 - $192 |
Frequently Asked Questions
Where is the MAP sensor located on the 2007-2010 Pontiac G5?
The MAP sensor on the 2.2L and 2.4L engines is located on the front of the engine, mounted directly on the intake manifold, often underneath the throttle body. 🎬 See this video to find the exact MAP sensor location. It's a small, black plastic sensor with an electrical connector.
Is this a difficult repair I can do myself?
No, this is a very easy repair for a DIYer. It typically involves removing the throttle body (four bolts) to get access, unclipping the electrical connector, rotating the sensor to unlock it, and pulling it out. The whole job can usually be done in under 30 minutes with basic hand tools.
🎬 Follow this step-by-step walkthrough to replace the sensor yourself.Can I just clean the MAP sensor?
While some people try cleaning the sensor with an appropriate electronic or MAF sensor cleaner, it is often not a permanent fix. MAP sensors are sealed electronic components that typically fail internally. If the sensor is truly faulty, replacement is the only reliable solution.
Do I need to reset the computer after replacing the sensor?
Yes, after replacing the MAP sensor, it's a good idea to clear the Check Engine Light codes using an OBD-II scanner. If you don't have a scanner, you can disconnect the battery's negative terminal for about 30 minutes to reset the computer. This allows the ECU to learn the new sensor's parameters immediately.
Are there any recalls or TSBs for this part?
There are no specific recalls for the MAP sensor itself on the 2007-2010 Pontiac G5. However, there are several Technical Service Bulletins (TSBs) related to fuel system and engine performance issues that can sometimes present similar symptoms. For example, TSB 12191A addresses potential cracks in the fuel pump module which can affect vehicle performance. It's always important to diagnose the problem correctly before replacing parts.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12569240 213-4681 213-1545
3-Pin Connector, Push-in Mount
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.
- Pontiac G5: