thank you for the link
I was the 43rd post in that link. Thats back when I tried cleaning my MAF--before I bought a new one. ( and as i wrote I dont know if my new one is good).

Now I hope to learn how to test it.

One contributor writes :::
The voltage specs are 0.980v - 1.030v. If your MAF reads above this, it is bad. Occasionally, the MAF volts will be in specs, but the part-load specs will be out of range (meaning that the MAF should flow apporx. 20kghr at part-load, but it registers a higher flow rating), this gives the code P0175 Self adaptations at part load factor. Enrichment at permissible limit.


How on earth do I read the Voltage on a MAF ?


thanks again.

__________________
Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles