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Old 12-08-2011, 10:36 AM   #41 (permalink)
Hypermiler
 
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PaleCivic (retired) - '96 Honda Civic DX Sedan
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I have no idea what, if any, differences there are between the 96, 97 and 98 ecu's. Just to be safe, I'd go with the closest to what you have now, so that would be the 97.

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Old 12-08-2011, 11:13 AM   #42 (permalink)
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Black and Green - '98 Honda Civic DX Coupe
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Quote:
Originally Posted by PaleMelanesian View Post
I have no idea what, if any, differences there are between the 96, 97 and 98 ecu's. Just to be safe, I'd go with the closest to what you have now, so that would be the 97.
The 97 was for the California emissions version. I have been trying unsuccessfully to find out what if anything that would have meant for FE. BTW, your 96 DX was rated slightly better for MPG than my 98 DX (still is under the new rules too). Mine was 32/37 and yours had been 33/38. You see this slight FE drop across the Civics 1996-1998. Not sure if its EPA or Honda tuning the ECU or something. Yours still came with 13" wheels, but I am willing to gamble that maybe the changed ECU tuning a little for more power?
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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Old 12-08-2011, 02:18 PM   #43 (permalink)
Hypermiler
 
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Join Date: Dec 2007
Location: Texas
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PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
Team Honda
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90 day: 44.06 mpg (US)
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Ah, I missed the Cali part. I'd get the 49-state one then.

I think they added extra safety gear to the doors, adding a little weight. That, and the 14" rims and 10mm wider tires.
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Old 12-13-2011, 04:13 PM   #44 (permalink)
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Black and Green - '98 Honda Civic DX Coupe
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Fixed, it seems. Thanks to all for your input. All the baffling DTCs were apparently merely incidental, and they are gone and not returning. I did not buy the ECU, and I'm glad. I did not buy the new MAP sensor, and I'm glad. Testing and trouble shooting gradually revealed the reality: my troubles seem to have been caused by a partial failure of the ignition coil. When I had tested the coil a few weeks ago by simply warming up to running temp it was fine. But as the distributor gets hotter during 15mins of 2200 RPMs it fails. The ICM was fried too. I bought a new rebuilt distributor (got a lifetime warranty!). Honda-tech.com was absolutely indispensable!
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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Old 12-13-2011, 08:14 PM   #45 (permalink)
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Wow, that's a nasty problem! I'm glad you were able to troubleshoot it successfully.

H-T is a very valuable source of info, but sadly there is an awful lot of stupidity and locker-room behavior to dig through to get to that information. (And some mis-information too.)

-soD
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Old 12-13-2011, 09:08 PM   #46 (permalink)
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Wow ! What an involved process,but look at what you know about your civic now....
Congrats and happy and profitable hypermiling. -Honfit
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Old 12-14-2011, 10:35 AM   #47 (permalink)
Hypermiler
 
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Join Date: Dec 2007
Location: Texas
Posts: 2,314

PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
Team Honda
Wagons
90 day: 44.06 mpg (US)
Thanks: 605
Thanked 422 Times in 277 Posts
I know more about my civic after this. Thanks for reporting it all for us.

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