LMM-TDI: The Ultimate Solution?

Hey everyone, to all those who have been affected by LMM (presumably referring to a specific event or company), and those who might be affected soon!

I had a problem with my work vehicle, a Skoda Octavia TDI with 110 horsepower, where the power would drop after 2500 RPM, and it generally lacked power, especially below 1500 RPM.
I suspected that the mass airflow sensor might be faulty.

Then I borrowed the mass airflow sensor from my neighbor's A3 to test it, and sure enough, it worked!

I then removed the sensor element from my mass airflow sensor (MAF). It's the part where the connector plugs in, held in place by two Torx screws. While doing that, I had an idea: to drill a hole in the plastic behind the metal bracket that measures the airflow, so that the air could flow directly past it.
The nozzle is located in a kind of recess, and there's a closed area behind it, so the airflow is limited, probably only occurring through turbulence and around the nozzle.

Well, anyway, I drove it, and the car is running like it used to.

I couldn't really believe it, so I taped the hole shut again, but it still worked just as badly as before.

Peel off the tape and everything's fine again!

If any of you are experiencing the same problem and are planning to...
If you're planning to buy a new LLM, please try my method.
and please let me know if it worked, thank you.

Best regards,
Stefan

stefan-der-erste wrote:

It was then that I had the idea to drill a hole in the plastic behind the metal bracket that measures the air, so that the air could flow directly past it. The nozzle is located in a kind of recess, and there's a closed area behind it, so the airflow is limited, probably only occurring through turbulence and around the nozzle. Well, anyway, I drove it, and the car is running like it did before.

Hi Stefan,

The effect is clear: a larger portion of the airflow is directed through the mass airflow sensor (MAF), which increases the output signal.

Only in this way will the complete LMM characteristic curve more or less deviate, which, for example, can result in too much soot during the inspection (unless you seal the hole for the inspection again ), and can also increase fuel consumption, especially if the engine visibly produces soot even during normal operation.

Certainly, this can extend the operational lifespan of some defective Mass Air Flow (MAF) sensors in terms of full performance , but if the part is broken to the point where it measures absolutely nothing, even the largest hole won't help anymore .