Cleaned Mass Airflow Sensor
 

I Have a 1996 E320 That had given me code P0170 (fuel trim malfunction Bank 1) I took off the mass air sensor,removed sensor from the body of the sensor,cleaned it with Primis Non Chlorinated Brake parts cleaner(Wal Mart)Dried it with compressed air and reinstalled it with different screws,so I could take it off again easily.The car now runs like a new one.I did this 3 weeks ago and have not had a check engine light since.Car has 78k miles by the way.Just wanted to let everybody know.This place is great,I check in just about every day to learn more..

They actually make a mas air flow cleaner in a can. What it is? Dunno, from my background I'm guessing some zero residue degreaser, we used to use freon TF to clean electrical contacts. I'd be carefull with the compressed air, the wires and plates could easily get damaged. I bought a can of the cleaner, and clean the MAS on the TDI Beetle, Cabrio, and Rover every 10k when I rotate tires. Will do the C230 soon.

Dumb Question??? Is there a difference between the O2 sensor and the Mass Air Flow Sensor?

Still trying to chase a rich fuel problem and wondering: (1) the question above; and (2) if there might be a MAF sensor on my 500SL. The O2 sensor has been replaced and that made no difference. So, if there is a MAF sensor, this might be a possibility.

Thanks,

C'mon guys!
 

Just a few lines down from this post

http://www.peachparts.com/shopforum/tech-help/200953-crc-mass-airflow-sensor-cleaner-works.html

:)

.....and All this stuff is in the Archieves in Spades ...