How to clean or replace the MAF sensor for VW?
7. Fill that bag with rubbing alcohol and shake, shake, shake! If you are dealing with the sensor by itself, and not the housing, you can use a smaller bag with less alcohol, and use q-tips to clean off any left on residue. That’s why I recommend taking the sensor out of the housing. 8.
Do you need to remove Phillips head from MAF?
If you still need to remove the 5-point tamperproof screws, I recommend removing the whole unit. Next you will need to remove the two Phillips-head screws connecting the MAF to the air box (on the right side of the MAF).
What happens when oil accumulates on the MAF sensor?
The more oil and dirt that accumulates on your MAF, the worse it serves its purpose. The dirtier it gets, the less accurate the reading it sends to your ECU (computer). These readings can cause lower gas mileage and a small loss of power.
How long does it take to clean a MAF sensor?
So if you’re willing to trust an eBay product, that is also an option. Doing this job as a beginner will take you around 30 minutes if you are replacing the MAF sensor, or around two hours (including drying time) if you decide to clean the sensor and put it back in. No special tools are needed for the job.
Why does my check engine light light up when I unplug the MAF?
If you unplug your MAF and your car all of a sudden perks up, then the MAF is more than likely the problem, and cleaning the sensor is a great place to start. Warning: If your check engine light is not already lit up when you try this test, unplugging the MAF sensor will cause it to illuminate.
How can I Reset my Check Engine light?
You can easily reset the light by unplugging the negative terminal on the battery for ten seconds (which is what I would suggest), or driving for sixty miles so the car can cycle. If your check engine light is already on, then this is a great test to try, but before you try it, head to your local auto store and get a free scan.
How to test mass air flow ( MAF ) sensor?
Just eyeball and physically shake/move the ducting to see if it’s loose or disconnected. OK, you’re gonna’ start by checking the basics. These are 12 Volts and Battery ground to the MAF sensor. After that, we’ll test the actual performance of the MAF sensor as the engine is running.
What kind of multimeter is used for MAF test?
After that, we’ll test the actual performance of the MAF sensor as the engine is running. Use a digital multimeter for all tests where a multimeter is called for. The MAF sensor produces an analog voltage signal. This MAF Signal’s DC Voltage is directly related to amount of air the engine is breathing.
What happens when the MAF sensor goes bad?
The test in this article is for the Bosch MAF sensor that produces an analog voltage signal that can be measured by setting the Voltmeter in Volts DC mode. Your VW car can display any number of different symptoms when the Air Flow Meter (MAF sensor) goes bad but, the most common ones are: The car will not idle or idle rough.