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California98Civic · 12-07-2011, 11:45 PM

Well, if I understand the drift of this thread well, it does seem you like me might be throwing parts at a problem that is deeper than it seems. I'm just an amateur, but in my current situation with my poorly running car the ignition system seemed to be the cause but now it seems to be the symptom. For a time the ignition problems seemed to be a symptom of a MAP sensor problem. I almost bought a new $95 MAP sensor, but I restrained myself, and did more testing. After testing, now the MAP sensor problems seem like a symptom of an ECU failure. I will test that tomorrow, hopefully, with a known-good ECU. If it solves the problem, maybe all is well.

Testing is cool.

And I love this quote from Old Mechanic: "The most important knowledge is not knowledge at all, just boneheaded perseverance."

12-07-2011, 11:45 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 2,174 Times in 1,470 Posts	Well, if I understand the drift of this thread well, it does seem you like me might be throwing parts at a problem that is deeper than it seems. I'm just an amateur, but in my current situation with my poorly running car the ignition system seemed to be the cause but now it seems to be the symptom. For a time the ignition problems seemed to be a symptom of a MAP sensor problem. I almost bought a new $95 MAP sensor, but I restrained myself, and did more testing. After testing, now the MAP sensor problems seem like a symptom of an ECU failure. I will test that tomorrow, hopefully, with a known-good ECU. If it solves the problem, maybe all is well. Testing is cool. And I love this quote from Old Mechanic: "The most important knowledge is not knowledge at all, just boneheaded perseverance." __________________ 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.