Thread: o2 sensor ? 1990 300se
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Old 02-03-2011, 02:34 PM
Ferdman Ferdman is offline
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Join Date: Aug 2002
Location: Southeastern PA
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lowesguy, remove the air cleaner housing and check if the air flow sensor is dirty. Cleaning the air flow sensor on our 1995 E320 resolved a persistent CEL.
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