Location of Mass Airflow Sensor?

[skmorgan]

C220CDi estate 2001

My merc is exhibiting all the symptoms of a faulty mass airflow sensor, lack of power, limit of 3000 rpm etc etc

Can anyone tell me where the MAF sensor is actually located? I bought a Haynes manual hoping this would show it but no!

Thanks in advance

Simon

 

[BlackC55]

On the air intake before the filter

 

[nickcc101]

Have read that if you unplug the cable to the MAF and the fault goes then this will prove that the fault will have been the MAF.

 

[Dieselman]

Not necessarily. Just meter Pin 5 with respect to Gnd. Expect ~2v at idle rising to ~4.5v - 4.8v at full revs.

 

[skmorgan]

Thanks for info. I wasn't sure which sensor it was as there are 2 but the one in the main airflow is the MAF. Located part number (A 611 094 00 48 if anyone interested). New part ordered on Ebay - original MB spare! Note currently 10% discount if paid via Paypal.

Interestingly when I put old sensor back and went for test drive, I couldn't replicate the problem!!!! Maybe the classic "fresh air" treatment was all it needed. However when new part arrives I will use it hopefully insuring against these intermittent faults.

Simon