RE: ML320 codes PO300 Multi mis fire.
today I had new cats installed and a vacuum line fixed. I dont know if it was one of those, or the computer reset or what..
But the Mercedes flew like the wind and idles so smooth I has to look at the tach to see if i was running.
12/17/2006 update. didnt take but a few miles after i wrote this and the rough idle came back and the check engine light came back on.PO170 PO173.
I ordered another MAS --- everything I read seems Imust have bought a defective New $100 Mass air flow sensor last month.I will update if this truck is ever cured.
1999 ML320 my 1st Mercedes