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Old 07-31-2008, 03:59 PM   #4 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,316

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

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

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)
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Wagonman - if I end up ditching it, the dash control is yours.

Gregte - thanks for the encouragement. I just got off the phone with tech support and they had me do a couple of things (I'm posting this just in case someone else finds this via Google):

1) ensure the unit's LED is blinking with it switched on and the engine running (if you're using the ignition method for input (vs. VSS or magnet kit).

That checked out OK.

2) disconnect and ground the purple wire from the brake switch to ensure it's not the culprit (the LED on the cruise control unit will light when the ground circuit is open)

That checked out OK.

3) ensure the engine is producing enough vacuum (14-20 inches of mercury required for the unit to function). My ScanGauge MAP values showed the car is producing enough vacuum under load. (1 inch of mercury = 0.49109778 pounds per square inch, thanks, Google)

Checked out OK.

At this point, the tech said I'd have to send the unit in. I'll open it up anyway and see what I can see. I don't have a signal generator to do any testing (hmmm, I do have the car...), but I'll at least visually inspect it.
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 - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
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