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FJR Motorcycle Forums
Technical & Mechanical Problems
Just a couple things I’d sure like to know
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<blockquote data-quote="1911" data-source="post: 1423522" data-attributes="member: 14133"><p>Just a couple things I’d sure like to know:</p><p></p><p>If you have a Gen2, such as my 2007, that DOESN’T run very poorly at minimal throttle openings, what does these measurements look like?</p><p></p><p>Bike on center stand, trans in neutral, engine running-</p><p></p><p>At idle-vacuum in inches/hg?</p><p></p><p>Vacuum at 3000 RPM steady?</p><p></p><p>MAP voltage under the same conditions?</p><p></p><p>At steady 3000 does your O2 fluctuate nicely from well above to well below 450mv?</p><p></p><p>When you transition from “key on engine off” to “engine running” do you lose .1 volt on your 5 volt reference circuit?</p><p></p><p>Granted, no normal person with a good running bike would be measuring this stuff but on the slim chance that somebody has worked through driveability issues and took a note or two…..</p><p></p><p>Heaven knows that I’ll have a lot more knowledge about what FJR electrons do by the time I get this thing fixed.</p><p></p><p>Vacuum measurements taken teed into the MAP sensor hose 1 inch from sensor and voltages backprobed + at ECU and meter grounded to battery neg.</p><p></p><p>This bike’s had the ECU recall done and a Brodie ground harness installed. TPS looks good and consistent. The MAP sensor plumbing is CLEAN.</p></blockquote><p></p>
[QUOTE="1911, post: 1423522, member: 14133"] Just a couple things I’d sure like to know: If you have a Gen2, such as my 2007, that DOESN’T run very poorly at minimal throttle openings, what does these measurements look like? Bike on center stand, trans in neutral, engine running- At idle-vacuum in inches/hg? Vacuum at 3000 RPM steady? MAP voltage under the same conditions? At steady 3000 does your O2 fluctuate nicely from well above to well below 450mv? When you transition from “key on engine off” to “engine running” do you lose .1 volt on your 5 volt reference circuit? Granted, no normal person with a good running bike would be measuring this stuff but on the slim chance that somebody has worked through driveability issues and took a note or two….. Heaven knows that I’ll have a lot more knowledge about what FJR electrons do by the time I get this thing fixed. Vacuum measurements taken teed into the MAP sensor hose 1 inch from sensor and voltages backprobed + at ECU and meter grounded to battery neg. This bike’s had the ECU recall done and a Brodie ground harness installed. TPS looks good and consistent. The MAP sensor plumbing is CLEAN. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Just a couple things I’d sure like to know
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