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Old 07-17-2015, 03:46 PM   #3 (permalink)
California98Civic
Cyborg ECU
 
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,297

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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Do you have a scan tool that can read OBD1 data? Because I had a not entirely dissimilar problem a while back. I replacdd the fuel pressure regulator because it fit the symptoms, butin the end it was pinching of the wires from the MAP sensor. What tipped me off in the end was OBD2 data about manifold vacuum. The D15z1 has a MAP sensor, I am sure. And I think I see it there below the solenoid you just installed. You can test its voltage signal if you have no scanner.
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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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