Mechanics

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1998 Mercedes Benz ML320 • 171,919 miles

PO170 & PO173 error codes. Have Installed K & N Air Filter, Auto Zone ran diagnostics on it and said it was not the Mass Air Flow sensor. Ran High Grade 16-OZ SF-16 SeaFoam motor treatment. That got it to stop for 2 days but the warning light came back on again. The next step will be to remove and clean the oxygen sensors. What do you suggest?
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AlbertTimme
November 10, 2011.



Look for a vacuum leak and also check the air tube

Rasmataz
Nov 10, 2011.


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