A factory MAF sensor lists for $91, or a Bosch replacement part costs about $74. This makes the job (including diagnosis) about $231 using OE parts, or about $214 using aftermarket parts. For a 2007 Nissan Altima with a 2.5 liter engine the labor to replace the MAF sensor is.3 of an hour.
Should I replace MAF sensor?
Why an MAF sensor needs to be replaced If the sensor gets dirty, it won’t be able to read the airflow. When the MAF sensor doesn’t work, the engine may idle roughly, hesitate, and have difficulty...
What can a bad MAF sensor do?
You may experience:
- Engine hesitation and/or surging
- Hard engine seizures
- Hard starting
- Check Engine Light
How can I check if MAF sensor is working properly?
How can I check if MAF sensor is working properly? There’s actually 2 ways to check a MAF sensor, firstly by using diagnostics equipment (Nanocom, Hawkeye, Rovacom, etc.) to check live readings which should be 55-60 kg/hr at idle & 550-640 kg/hr at full boost.
How much does a mass air flow sensor cost?
The average MAF sensor replacement cost is between $140 and $550, depending on the car model and labor costs. A Mass Air Flow Sensor costs $100 and $400 while the labor costs $40 to $150. The MAF sensor itself is often quite expensive, as you sometimes have to replace the whole MAF sensor housing. Even the sensor itself can be expensive.
What are symptoms of bad MAF sensor?
3 Signs of a Bad Mass Air Flow SensorStalling, jerking, or hesitation during acceleration.air fuel ratio is too rich.air fuel ratio is too lean.
How long does it take to replace a mass air flow sensor?
Time Required: 5-90 minutes, depending on how easy or difficult it is to reach and remove the mass air flow sensor on your particular vehicle.
What happens when a MAF goes bad?
A bad MAF sensor can cause your vehicle to experience poor drivability issues such as engine stalling, jerking or hesitation during acceleration. This could happen while speeding up on the highway on-ramp or cruising down a city street. These issues can create dangerous situations causing accidents and injury.
What causes a MAF sensor to fail?
Contamination is a key reason why MAF sensors fail and require replacement. As air, dirt and other debris get into the sensor, the parts become contaminated and fail. Drivers often notice sluggish performance, rough idling, poor acceleration or even stalling. There may also be a more frequent need to refuel.
Can I replace a MAF sensor myself?
Use a screwdriver to loosen the clamp or screws on each side of the MAF that secure it to the intake pipe and air filter. Once the clamps are removed, you should be able to pull the MAF right out. Tip: There are many different ways a MAF sensor is secured.
Is the MAF sensor expensive to fix?
MAF Sensor Replacement Cost The replacement cost of a mass air flow sensor can anywhere from $80 to $380. The cost of the part alone is about $30 to $300 with the lower end of the range for common aftermarket mass air flow sensors while higher quality or more complicated OEM sensors are more expensive.
Will a bad MAF throw a code?
Mass Air Flow Sensor Symptoms A faulty MAF sensor can also trigger other codes, such as those pertaining to an air/fuel ratio imbalance or an engine misfire.
Can you fix a MAF sensor?
Replacing or repairing your mass air flow sensor should be very easy. You just need to take off a few plastic pieces by unscrewing a few bolts and replace the sensor. If you have no confidence in replacing it by yourself, go to your mechanic and replace it, it shouldn't be a labor-intensive job.
How often do MAF sensors go bad?
The MAF sensor needs to be replaced every 10,000 – 12,000 miles. Your MAF sensor's life can be extended with regular maintenance and air filter replacement. A good rule of thumb is to go by the book every 10,000 to 12,000 miles. There is no such thing as an expiration date for a mass airflow sensor (MAF).
What should I do after replacing MAF sensor?
Therefore we would like to give some advise on what to do, when the new MAF does not work....After Installation of the new MAF:But if the motor continues to have problems, run the engine idle for 20-30 minutes.You can reset the ECU by disconnecting the battery for 10 min.More items...•
How do you check a MAF sensor?
0:586:09How to Test a Mass Air Flow (MAF) Sensor - Without a Wiring DiagramYouTubeStart of suggested clipEnd of suggested clipUse clasp if you have to all right next we want to get our test lead and start testing these pins onMoreUse clasp if you have to all right next we want to get our test lead and start testing these pins on the harness side the harness side being the side that's not coming from your MAF sensor.
Is a mass air flow sensor the same as a MAP sensor?
What are some differences between a MAP and MAF sensor? While a MAF sensor is always located before the throttle body, a MAP sensor can usually be found attached to the intake manifold. Because it is in the intake tract, A MAF sensor will also have its own housing (usually plastic) to hold it in place.
Cost of Mass Airflow Sensor Replacement
On average for most vehicles, it costs about $250 to replace a MAF sensor.
What Goes Wrong with MAF Sensors
The main common problem is dust or oil or any kind of contamination fouls the MAF sensor element. If the element is blocked at all it won’t register the correct amount of air, almost always underestimating, and the engine will run lean. Signs of that are low power, poor mileage, white deposits on the spark plugs, and exhaust valves.
How much does it cost to replace a MAF sensor?
The average MAF sensor replacement cost is between $140 and $550, depending on the car model and labor costs. A Mass Air Flow Sensor costs $100 and $400 while the labor costs $40 to $150.
Where is the MAF sensor located?
The MAF sensor is located on the big hose between the intake manifold and the air filter box, often installed on the air filter box. Its exact location varies from manufacturer to manufacturer, as they fit the sensor based on the engine’s design. You can use a repair manual to ensure the location or use the internet for a quick search.
What happens when a MAF sensor goes bad?
The most common things that happen are a check engine light, bad engine performance, rough idle, and changed fuel consumption.
What is a mass air flow sensor?
The Mass Air Flow Sensor or MAF sensor is an important part for most car engines to function properly. It controls how much air is entering the car engine and then sends this information to the engine control unit, which controls how much fuel the fuel injectors should inject into the engine. Unfortunately, it happens sometimes ...
Why is my air flow sensor not working?
Often, the problems associated with the mass air flow sensor occur due to dirt and debris buildup on the sensor head. This particle accumulation over time results in poor performance of the sensor.
Can you drive with a bad air flow sensor?
A bad mass air flow sensor may cause a lot of problems with your car engine, and therefore it is not recommended to drive with it. If your engine is running fine, you can drive slowly to the closest repair workshop without problems, though.
Can a faulty MAF sensor cause fuel consumption to go up?
This last symptom is probably the most obvious as you already know that a faulty MAF sensor causes a wrong air-fuel mixture. Therefore a faulty MAF sensor can cause the fuel consumption to either going up or down.
How Much Does Mass Air Flow Sensor Replacement Cost?
For your beloved car to run properly, you need to replace the mass air flow sensor at the earliest. Just so that you know, the replacement cost will be easy on most wallets. Oh yeah! The replacement cost won’t cause a dent in your bank account.
Can You Drive With a Faulty Mass Air Flow Sensor?
Driving with a non-operational mass air flow sensor means compromising your safety. After all, a faulty mass air flow sensor causes engine issues, ultimately affecting the vehicle’s normal functioning.
How To Replace Mass Air Flow Sensor?
Frankly speaking, it’s not a rocket-science affair to replace the mass air flow sensor. It’s a fairly easy job that can be accomplished even by naive car DIYers. It just requires some screwing and unscrewing to remove the old mass air flow sensor to replace it with the new one.
How To Save Money When Replacing a Mass Air Flow Sensor?
Even though it’s an easy job, you might need a helping hand to diagnose the problem and even to clear the trouble codes. This is to say that not everyone out there will be able to complete the replacement process on their own from start to finish. To save money, you can hire a professional to help you in the trouble areas (discussed above).
What happens if a MAF sensor fails?
When the MAF sensor fails driving can be dangerous. As engine power will surge on and off, the vehicle may lurch forward. Overall engine performance may become unpredictable and difficult to control. It is preferred to tow the vehicle if any of the mentioned symptoms are present.
How many miles does a MAF sensor fail?
MAF sensors do tend to fail sometime in most vehicles. Failure rates are highest between 100,000 and 125,000 miles. The sensor can also be damaged during air filter changes, and anytime the engine intake is serviced. Lastly, a collision may cause a physical or electrical fault in the MAF sensor.
What is the most important sensor in an engine?
An extremely important sensor that is used in reference to nearly all engine operations is the mass airflow (MAF) sensor .
How does a mass airflow sensor work?
All cars take air from the outside and pass it into the engine through the air filter. The mass airflow sensor measures the amount of air entering the engine. For an engine to perform properly, it needs a specific amount of air-fuel mixture.
What happens when the mass airflow sensor stops working?
When the mass airflow sensor stops working, the computer cannot receive information on the air intake, and the fuel-to-air ratio will be wrong. This will cause your engine to run poorly, and sometimes not at all. It will also impact your gas mileage.
Why does my airflow sensor get dirty?
It is common for the mass airflow sensor to get dirty (if the air filter is dirty) and lose the ability to read the amount of air coming in the engine. If the vacuum hoses are leaking, it will give the same error code as mass airflow sensor failure.
Why does my airflow sensor stop working?
Often mass airflow sensors stop working because of bad connectors or wiring harnesses. Anytime the mass airflow sensor is replaced, the air duct between the sensor and the intake manifold should be inspected.
How does a hot-wire air flow sensor work?
A temperature sensor positioned near the hot wire monitors the air’s temperature. A small electrically heated wire (hot wire) is used in a hot-wire mass air flow sensor. The temperature of the surrounding area is measured by a temperature sensor that is linked to the hot wire.
How do you clean a dirty mass air flow sensor?
Cleaning your mass airflow sensor once a year, or whenever you change your oil, is usually a suitable idea. Cleaning it after changing or cleaning your air filter will save both time and money. Here’s how to clean your mass air flow sensor.
How much does it cost to replace a mass air flow sensor?
The average cost of replacing a mass air flow sensor is between $140 and $550, depending on the vehicle model and labor charges. A mass air flow sensor costs between $100 and $400 while labor costs $40 to $150.
FAQs
Yes, you can drive with a bad mass air flow sensor but not for very long. Driving too long with bad maf sensors can lead to serious engine trouble.
