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Old 10-20-2011, 09:35 PM   #27 (permalink)
California98Civic
Cyborg ECU
 
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
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Quote:
Originally Posted by oil pan 4 View Post
I have to try this for sure.
My salvaged float charger panels will go on first.
I have gotten word my trucks batteries I installed back in 2007 have likely bought it from sitting for the last 8 or 9 months. It could be time for optima deep cycle batteries.
Problem!

Although I'm hovering between 66.5 and 67.5 mpg and hardly use the alternator in daylight, I wonder if the battery mod is damaging the fuel system. Three or four times I have run the voltage down to under 12. Most of the time the voltage is between 12.1 and 12.7. Now I seem to have fuel flow problems. The car hesitates and testing suggests the hesitancy is not not dependent on battery voltage, bump-start fuel pressure loss, throttle position, load, engine temp, or engine speed. I know the fuel pump is electrical. Have I damaged my fuel pump with my weird alternator optional set-up?
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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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