JTD Performance Issues: Troubleshooting & Solutions

Hello,
I drive a 1.9 JTD (common rail) Alfa 146 with 105 horsepower. For the past two months, I've been experiencing a loss of power - the maximum speed is now 170 km/h (usually it's around 190 km/h).
I then looked at several online forums and came across information about the mass airflow sensor.
I had already replaced the diesel filter and the air filter.
At the workshop, they confirmed my concern - the mass airflow sensor (MAF) is defective.

My question: Could it simply be that it's just dirty? Usually, it should glow again (self-cleaning). I can't imagine that it would just break, right? I'm also not sure if I can just take it out, and what's the best way to clean it?
Does anyone else have similar problems?
I would be happy to receive an answer, even if I am one among the 'exotics' .
Best regards, Eazzy.

Hi,
There were (or are?) hot-wire mass airflow sensors that can burn out. However, the VAG group has been using hot-film mass airflow sensors for many years (approximately since 1994?).
If your Alfa also has the latter installed (exotic component issue ), cleaning with brake cleaner has proven effective (spray generously and allow to dry thoroughly; optionally, carefully clean with a cotton swab, although opinions on using a cotton swab vary greatly).

Good luck.

Sure, here is the translation of the text from German to English:

'Addendum:'
It appears that certain newer VAG vehicle/engine types are more prone to experiencing vibration-induced failures of the mass airflow sensor (MAF). There may be a similar issue with Alfa Romeo vehicles.

Hello Ruedi,
Thank you for the quick help. I will definitely try using brake cleaner - maybe it will work - hopefully . At the Bosch service center, they wanted 266 EUR + 16%. Okay, I wish you all the best.
Hi Norman,

aloha
My friend drives a Fiat Marea 1.9 JTD (110 hp).
In the marea forum, it was reported that using oil-filled air filters led to damage to the mass airflow sensor (MAF). I wonder if you might have used a similar air filter? I suspect they are made of the same material.

greetings
eltipo