What Does the Mass Airflow Sensor Do?

Schedule Brake Pad Replacement
Service Area

$124.62 - $450.29

Price range for all vehicles
Average rating from 10,732 customers who received a Brake Pads Replacement.

How often does the mass airflow sensor need to be replaced?

Mass airflow sensors (MAF) have no expiration date. They are not included on the manufacturer’s scheduled maintenance list of things to replace based on mileage, like spark plugs or filters. They can remain in service indefinitely as long as they continue to function correctly.

However, MAF sensors are critical to engine performance, good gas mileage, and low emissions. They are also fairly fragile and sensitive to contamination. A bit of basic preventative maintenance awareness can help an MAF stay alive and healthy as long as possible. Since the function of an MAF is to measure all the air flowing into the engine, they have a LOT of air flowing through them. Try to imagine 9,000-10,000 gallons of air flowing through your engine for every 1 gallon of gas burned! That much air carries a lot of fine dust and particulates of all types. It is the job of the air filter to keep that all that junk off of the MAF, as well as out of your engine. So replace the air filter when recommended, keep the inside of the air filter box very clean, and be sure the ducts between the air filter box and the throttle body are all securely clamped and airtight.

Another simple maintenance item that is commonly neglected can impact the cleanliness of the MAF, the PCV valve. It should be replaced according to the manufacturer’s recommendations based on mileage. If the PCV valve becomes restricted, it can cause crankcase vapors to back up through the engine’s breather system and leave oily deposits on the MAF. If the MAF gets dirty, it becomes less accurate and a loss of performance will usually be noticed. A trouble code will get logged in the computer, and the Check Engine Light will illuminate.

Many times, MAFs are removed, cleaned with a spray cleaner, and reinstalled. This is not a permanent fix. For a more long-lasting repair, have the MAF replaced.


Next Step

Schedule Brake Pad Replacement

The most popular service booked by readers of this article is Brake Pad Replacement. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Brake Pad Replacement reviews

Excellent Rating


YourMechanic Brake Pad Replacement Service

Average Rating

4.9/5

Number of Reviews

10,732

Rating Summary
10,227
323
67
33
82
10,227
323
67
33
82

Rigoberto

9 years of experience
706 reviews
Rigoberto
9 years of experience
Chevrolet Equinox - Brake Pads Replacement (Rear) - Niles, Illinois
Rigo was great! He got there early, finished the job early, left everything clean. He changed my rear pads and rotors. The original quoted time was 90 minutes, he was done in about 60. He knows what he is doing and I am recommending him to all my friends and coworkers.
Mercedes-Benz C250 - Brake Pads Replacement (Front, Rear) - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Arturo

25 years of experience
35 reviews
Arturo
25 years of experience
Kia Forte - Brake Pads Replacement (Front) - San Diego, California
ARTURO is great! very professional , fast, replaced my front brake pads and oil an filter change. everything now works and works well. Brakes have much improved stopping power and engine is smooth and quiet.Arturo is also kind and thoughtful. "Your mechanic" is very fortunate to have Arturo Lopez represent your company. I enthusiastically recommend him and "Your mechanic> as a fine operation Best regards to the Team Peter Marto
Nissan Maxima - Brake Pads Replacement (Front, Rear) - San Diego, California
Arturo was prompt and completed my brake repair, including new rotors in a very efficient manner. I am very pleased with the quality of the work and the parts and will definitely look to have him service our other car in the near future.

Scott

32 years of experience
345 reviews
Scott
32 years of experience
Lexus IS250 - Brake Pads Replacement (Rear) - Denver, Colorado
Always on time, speedy, professional, and pleasant to interact with. The work is always consistent and we'll done. I can't reccomend Scott highly enough!

Michael

10 years of experience
15 reviews
Michael
10 years of experience
Nissan Sentra - Brake Pads Replacement (Front) - Conyers, Georgia
He was promptly on time and got the job done efficiently in a timely manner. I really appreciate the rapid respone on getting the job done! I would most definitely use this service again.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE