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FJR Motorcycle Forums
Technical & Mechanical Problems
Odd Idle and TB Sync observation
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<blockquote data-quote="Fred W" data-source="post: 1245578" data-attributes="member: 3828"><p>Not sure what you mean by 1-1-1-1 dropouts. The only Diag I am aware of is to display the TPS sensor's digitized value in the diag screen while you slowly rotate the throttle tube. The TPS itself is an analog device, really just a giant potentiometer attached to the end of the throttle shaft. The value displayed is the digitized value of the analog voltage from the TPS. The number displayed should smoothly increment and decrement as you rotate the throttle open and closed.</p><p></p><p>All of that said, I think bad TPS problems are often intermittent in nature and do not show up using that diag. They generally do not start acting up until they've been heat soaked, like after a half hour or more of highway speeds. And you would have to run the diag test while it is in the "failure mode" to catch it with the test.</p></blockquote><p></p>
[QUOTE="Fred W, post: 1245578, member: 3828"] Not sure what you mean by 1-1-1-1 dropouts. The only Diag I am aware of is to display the TPS sensor's digitized value in the diag screen while you slowly rotate the throttle tube. The TPS itself is an analog device, really just a giant potentiometer attached to the end of the throttle shaft. The value displayed is the digitized value of the analog voltage from the TPS. The number displayed should smoothly increment and decrement as you rotate the throttle open and closed. All of that said, I think bad TPS problems are often intermittent in nature and do not show up using that diag. They generally do not start acting up until they've been heat soaked, like after a half hour or more of highway speeds. And you would have to run the diag test while it is in the "failure mode" to catch it with the test. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Odd Idle and TB Sync observation
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