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Old 12-18-2008, 10:17 AM   #21 (permalink)
PaleMelanesian's Avatar
Join Date: Dec 2007
Location: Texas
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PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
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Ah, a Grand Prix - nice car. That's a great highway cruiser. Just go nice and easy on the gas pedal and it'll reward you. MUCH easier than many other cars. The transmission is eager to unlock when you let up on the gas, so you'll have little need to manually shift into neutral. Just keep it rolling. Stops are a killer on those. (actually, it's the start that follows...)

A friend here has a Buick with the same drivetrain. He gets ~25 mpg in town, but has come this close to 40 on highway trips.


11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles

Last edited by PaleMelanesian; 12-18-2008 at 10:25 AM..
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Old 12-18-2008, 11:04 AM   #22 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
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Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 55.97 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
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Appliance car - '14 Mitsubishi Mirage ES (base)
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Given that it's an automatic, I think your best hope is DWL in top gear with the torque converter locked. Without instrumentation, DWL is harder to do. You'd be surprised at what the slightest - almost imperceptible - changes in throttle position do to your current fuel consumption.

For DWL, a vacuum gauge would work fine.

Or wire a multimeter to your MAP sensor and aim for voltage readings that correspond to lightest load.
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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Old 12-18-2008, 02:53 PM   #23 (permalink)
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Join Date: Nov 2008
Location: Troy, Pa.
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Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
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Pale - Tell me about the starting off again thing.. I try not to stop if I don't have to, b/c I can actually hear the car groaning under it's own fat backside when I hit the gas again. If we end up keeping this car, I intend to do something about THAT as well.

MetroMPG - Thanks for the tip, I'll have to see how this trip up north works out.. if it's pretty good, I'll probably invest in a Guino kit and go from there, since I can put it in a diff car later on. (PS I think I have a vacuum/boost gauge somewhere, actually.. )

"ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

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