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Old 11-28-2007, 02:10 PM   #5 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,413

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.07 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 66.16 mpg (US)
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April 22: So, I did another test. After topping up the coolant (I do believe there was an air pocket last time).

Plugged in the EBH:

73F - start
76F - 10 min
83F - 20 min (hose to tank feels warm - suggests convective loop flow)
85F - 30 min (all hoses from tank hot, block warm)
89F - 40 min (hoses from tank very hot, water pump warm)

So I'm thinking there's a lot of stored heat in the coolant, but it's not flowing to the sensor as much as I'd like. A plumbing issue, perhaps?

I figure: best way to know for sure is to start the car, and get the coolant flowing past the sensor.

121F - 30 seconds after starting (@ idle)
127F - 60 seconds after starting (@ idle)

Nice. I never saw a 50F increase from the 350W external heater (+40F was about as much as it would add), after 1.5 - 2 hrs.

+50F in 40 mins is quite nice. I'll probably do another test again...
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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



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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