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Old 03-20-2019, 03:15 PM   #242 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,515

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

MPGiata - '90 Mazda Miata
90 day: 52.71 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: 52.48 mpg (US)
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P0400 code = EGR swaperoo!



I've gotten a few P0400 CEL's in the past couple of weeks. I had some earlier in the winter, so removed and cleaned the EGR valve with carb cleaner as best I could.

It came back, so I just swapped everything with the known good parts from the Flea.

It sure idles smoother and runs better at low RPM than it used to!

I busted the wee hose fitting off one of the electro-valve actuator thingers. It may have been cracked all along, so there would have been a very small vacuum leak. Or it's a coincidence and the prob is elsewhere. Who knows!

I'll swap the components back one at a time and see what happens.
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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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