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California98Civic · 05-19-2015, 09:44 PM

After 20 or 25 miles of normal operation, the problem returned as I began the return commute. I stopped repeatedly, checking one connection at a time until the problem went away again. It turned out to be the connector into the MAP sensor. Back in March or April, when I repaired the fuel pressure regulator the second time, I relocated my extra brake booster and it seems the vacuum line began to conact and stress the wires into the connector for the MAP. Since it was behind and under the air cleaner box, against the firewall, I did not notice. As soon as I repositioned the vacuum line and reattached the MAP sensor connector, the problem went away.

Perhaps the problem is solved, but only driving will "prove" it.

Thanks!

James

05-19-2015, 09:44 PM	#33 (permalink)
California98Civic Cyborg ECU 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 Thanked 2,172 Times in 1,469 Posts	update After 20 or 25 miles of normal operation, the problem returned as I began the return commute. I stopped repeatedly, checking one connection at a time until the problem went away again. It turned out to be the connector into the MAP sensor. Back in March or April, when I repaired the fuel pressure regulator the second time, I relocated my extra brake booster and it seems the vacuum line began to conact and stress the wires into the connector for the MAP. Since it was behind and under the air cleaner box, against the firewall, I did not notice. As soon as I repositioned the vacuum line and reattached the MAP sensor connector, the problem went away. Perhaps the problem is solved, but only driving will "prove" it. Thanks! James __________________ 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.