Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Got a new UFO*: 2000 Honda Insight 5-speed (ailing IMA hybrid battery pack)

MetroMPG · 05-23-2011, 06:39 PM

Woohoo!

I'm tentatively saying that the EGR parts cleaning has solved the herky-jerky / bucking / engine miss at low load cruise!

EGR plate channels cleaned, EGR valve disassembled, inspected & cleaned, everything re-installed.

The valve didn't look bad at all, in terms of carbon/soot, and the carbon traces (in the potentiometer that sends valve position info back to the computer) showed no signs of wear/scratching, as they have on others' gen.1 Insights. But I flipped the contacts over anyway to present a smoother contact surface.

Took the car on a 20 km mostly rural highway drive that I've done a few times before and experienced NO engine missing. (Had it before on this route.)

2.9 L/100 ... 81.5 mpg (US) round trip mileage from a cold start, bit of idling, couple of high load & high RPM bursts.

And that's with the hybrid assist & regen disabled.

Car's ready for inspection now.

05-23-2011, 06:39 PM	#52 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,534 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 57.73 mpg (US) Thanks: 4,082 Thanked 6,979 Times in 3,614 Posts	Engine miss fixed! Woohoo! I'm tentatively saying that the EGR parts cleaning has solved the herky-jerky / bucking / engine miss at low load cruise! EGR plate channels cleaned, EGR valve disassembled, inspected & cleaned, everything re-installed. The valve didn't look bad at all, in terms of carbon/soot, and the carbon traces (in the potentiometer that sends valve position info back to the computer) showed no signs of wear/scratching, as they have on others' gen.1 Insights. But I flipped the contacts over anyway to present a smoother contact surface. Took the car on a 20 km mostly rural highway drive that I've done a few times before and experienced NO engine missing. (Had it before on this route.) 2.9 L/100 ... 81.5 mpg (US) round trip mileage from a cold start, bit of idling, couple of high load & high RPM bursts. And that's with the hybrid assist & regen disabled. Car's ready for inspection now. __________________ 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 Last edited by MetroMPG; 05-23-2011 at 06:43 PM.. Reason: Engine miss fixed!