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Sudden drop in gas mileage.
O2 sensor has only close to 11,XXX miles on it. Spark plugs are about the same as well as air filter. No CEL code. Nothing was tampered with. Fuel/Air mixture is as it was when car came from the factory. I usualy would get anywhere from 280-300 miles on a full tank of gas (city and highway respectively) now I only get 240 miles city. Any suggestions
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![]() 1990 190E 3.0L |
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