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FJR Motorcycle Forums
Technical & Mechanical Problems
The reason why I'm checking things
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<blockquote data-quote="RossKean" data-source="post: 1432404" data-attributes="member: 19880"><p>No error codes?</p><p></p><p>Don't apply too much pressure or vacuum to MAP sensor. They may not like it!!</p><p></p><p>Regarding idle adjustment... The adjustability on a GenII may be a function of your throttle body synchronization. Most people just adjust the screws to get them all the same and this is the most important. If the reference cylinder is not where it should be, you may find you can't adjust idle enough. Try a TBS after setting all of the screws between a half and three quarters turns from lightly seated. This usually works...</p><p></p><p>Note: Don't make major adjustment changes if you have a mechanical/electronic issue is causing the problem. It is unlikely that the ECU was damaged - they tend to work properly or not at all.</p><p></p><p>You might try running with the O2 sensor disconnected. They run pretty well with no O2 sensor but not so well with one that is not reading correctly!! (I pinched mine in the case upon reassembly and it messed things up!!) <a href="https://www.fjrforum.com/topic/140471-shorted-oxygen-sensor/?tab=comments#comment-892900" target="_blank">https://www.fjrforum.com/topic/140471-shorted-oxygen-sensor/?tab=comments#comment-892900</a></p><p></p><p>I assume that you are not using a Power Commander or other device that affects the fuel mixture??</p></blockquote><p></p>
[QUOTE="RossKean, post: 1432404, member: 19880"] No error codes? Don't apply too much pressure or vacuum to MAP sensor. They may not like it!! Regarding idle adjustment... The adjustability on a GenII may be a function of your throttle body synchronization. Most people just adjust the screws to get them all the same and this is the most important. If the reference cylinder is not where it should be, you may find you can't adjust idle enough. Try a TBS after setting all of the screws between a half and three quarters turns from lightly seated. This usually works... Note: Don't make major adjustment changes if you have a mechanical/electronic issue is causing the problem. It is unlikely that the ECU was damaged - they tend to work properly or not at all. You might try running with the O2 sensor disconnected. They run pretty well with no O2 sensor but not so well with one that is not reading correctly!! (I pinched mine in the case upon reassembly and it messed things up!!) [URL="https://www.fjrforum.com/topic/140471-shorted-oxygen-sensor/?tab=comments#comment-892900"]https://www.fjrforum.com/topic/140471-shorted-oxygen-sensor/?tab=comments#comment-892900[/URL] I assume that you are not using a Power Commander or other device that affects the fuel mixture?? [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
The reason why I'm checking things
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