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The BMW Range
5 Series
E39
Fuel consumption 11.3L/100km
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<blockquote data-quote="niceputera" data-source="post: 419521" data-attributes="member: 2213"><p>Herbert,</p><p> </p><p>IMHO, normally spark plugs, air filter+ MAF and O2 sensors will affect directly to our fuel consumption and/ the engine performance. If the first two parts have been checked to be working nicely, than normally it is the O2 sensor that needs to be checked. Worn out O2 sensors will give wrong data/input to the ecu hence not so efficient calibration of the air fuel ratios hence affecting the fuel / power. This is true to all cars. Please try.</p></blockquote><p></p>
[QUOTE="niceputera, post: 419521, member: 2213"] Herbert, IMHO, normally spark plugs, air filter+ MAF and O2 sensors will affect directly to our fuel consumption and/ the engine performance. If the first two parts have been checked to be working nicely, than normally it is the O2 sensor that needs to be checked. Worn out O2 sensors will give wrong data/input to the ecu hence not so efficient calibration of the air fuel ratios hence affecting the fuel / power. This is true to all cars. Please try. [/QUOTE]
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The BMW Range
5 Series
E39
Fuel consumption 11.3L/100km
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