Post MAF - O2 Sensor Fuel Consumption
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Newbie
Joined: Jan 2014
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2005 Mercedes W203
Post MAF - O2 Sensor Fuel Consumption
Hello,
I was wondering how the MAF and O2 sensors can affect my car's fuel consumption. I get almost 350Km on 35liters of unleaded 98 petrol. My car is a 2005 C180K sport edition and has 118K (km) on the clock and i have never changed those sensors. Is it something that has to be checked during services or just stay there until an error comes up?
Thanks
I was wondering how the MAF and O2 sensors can affect my car's fuel consumption. I get almost 350Km on 35liters of unleaded 98 petrol. My car is a 2005 C180K sport edition and has 118K (km) on the clock and i have never changed those sensors. Is it something that has to be checked during services or just stay there until an error comes up?
Thanks
Junior Member
Joined: Dec 2013
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W203 C200 CDI Facelift 122-158hp
It stands to reason that your sensors influence the mix of air and fuel in the engine. So , a bad sensor can lead to ineficient burning of the fuel, so more fuel consumption.
I also believe that they come up on the STAR tester if they are faulty. A good mechanic can tell from experience if the air intake is not normal.
I also believe that they come up on the STAR tester if they are faulty. A good mechanic can tell from experience if the air intake is not normal.
Last edited by W203_Fan; Mar 12, 2014 at 06:54 AM.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Check for stored codes. Fuel consumption is directly related to usage patterns & driving style. If you do a lot of short trips open loop enriched then the consumption is normal.
If MAF or O2 sensors are faulty you will be storing fuel trim codes etc.
If MAF or O2 sensors are faulty you will be storing fuel trim codes etc.
