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Old 03-11-2019, 10:14 AM   #241 (permalink)
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I'm not sure if the wire could be responsible for the other issue, but it's possible. The problems outlined in that thread haven't happened again since I last posted about it there. And I never found a "smoking gun".

When it warms up a bit more, I'll trace the mystery wire to find out where it goes. I'll update both threads when I figure it out.

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Old 03-20-2019, 03:15 PM   #242 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,776

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 60.34 mpg (US)
Thanks: 2,632
Thanked 5,537 Times in 2,840 Posts
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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__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
  Reply With Quote
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