The c280 is running rough. Odd shift points, computer-retarded timing, all intermittent, ck engine lite on continuously. Took it to the local foriegn car guy, He said the MAF was going bad, and his test computer said 1 dead-short o2; and 2 out-of-range o2 sensors. Recommende replace all 4 ($170@) and MAF ($400) plus labor, ouch.
Where is your favorite source for MB parts. I see no reason I can't do these myself.
Thanks,
99 C280 105,800 miles

 

Can the MAF be cleaned?

 

I like the prices at Importec I purchased a Bosch O2 Sensor from them for my '99 C280 for
$95 after a rebate from Bosch. No shippinig charge either.

Here is a cleaning process for an MAFS. I don't know if it helps?

 

Go to a dealer, I had the MAS go on my 99 C280 3 years ago, and all the O2 sensor were off. They replaced the MAS and only one sensor was bad.