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Old 04-07-1999, 11:14 PM
Nick Jamal
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I could definitely use some expert help here! I have an 86 300E with 105k that generally runs well. However, I am getting dismal fuel economy of about 12.5/17mpg (city/hwy). This has persisted despite a new O2 sensor, spark plugs, K&N filter and good driving habits. Any suggestions?
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Old 04-08-1999, 10:59 PM
Benzmac
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When the O2 was replaced was lambda checked? It should be about 50 to 60 percent for optimum fuel economy.

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Old 04-09-1999, 03:24 PM
Nick Jamal
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lambda? If you mean the air/fuel mix, then yes. If not, I'm in the dark.

[This message has been edited by Nick Jamal (edited 04-09-99).]
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