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Fuel Consumption
996 GT3, fuel consumption has gone downhill and remains at 11-12 mpg. I'm looking for a cause and possible fix.....please help
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11-21-2010, 08:11 AM
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Registered
Join Date: May 2004
Location: Brandon FL
Posts: 371
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How much mileage on plugs/O2/air filter? Are they putting ethanol mix in the gas? I replaced my O2 sensors @ about 110K and got about 1 more MPG in city.
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Rick 99 996C4 06 525XI 87 944S - Sold 77 924 - Sold |
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11-21-2010, 02:30 PM
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It has a K&N air filter installed. So it was possible some of the oil coated the mass air flow sensor so I checked and cleaned it and that had no effect. I suppose changing the plugs wouldn't hurt. The car has 27k miles on it. Also had a mech read any codes that may have cause an error but no codes appeared. my first thought is maybe some module linked with the computer may not be working properly. Northewest gas does use ethanol.
Last edited by porgt304; 11-21-2010 at 07:37 PM.. |
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11-21-2010, 07:30 PM
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Registered
Join Date: Jan 2004
Location: Northern Virginia
Posts: 3,347
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11-12mpg at the track would be great!
 That said, while ETHANOL is a part of your life, are there any other reformulations of gas in the PNW? Have you noticed an MPG drop in your other cars to point to a seasonal change of some type? is it particulalry colder or has your use changed (ie, commuting vs open weekend drives?)
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1970 914-6 Past: 2000 Boxster 2.7, 1987 944, 1987 924S 1978 911SC, 1976 914 2.0, 1970 914 w/2056 |
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11-22-2010, 05:19 PM
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996 GT3
