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FJR Motorcycle Forums
Technical & Mechanical Problems
2007 FJR1300A Intermittently Stalling at Idle or throttle release
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<blockquote data-quote="RossKean" data-source="post: 1175609" data-attributes="member: 19880"><p>First thought was a dirty or faulty injector. Do I understand that you cleaned them after the problem started? (could still be an issue.)</p><p></p><p>Also, I would try pulling the Power Commander out of the system and re-connect the O2 sensor to see if that makes a difference; even if you have no intention to run it this way long-term. Failures or problems with PC units are not common but they do happen.</p><p></p><p>Coils/wires replaced before or after problems started? Again, a bad coil/wire could cause your symptoms. Does this happen more often in high humidity and/or rain?</p><p></p><p>If the plugs still looked good immediately after an "incident" it seems less likely that is a rich fuelling problem but could be lean. Poor combustion (bad coil/wire) would result in a crappy-looking plug but this would pretty much clean itself up after a bit of running.</p><p></p><p>I had a crappy running situation once that was traced to a semi-shorted O2 sensor; pinched in the timing cover after some maintenance. If you are running the PC with the O2 sensor disconnected, then that's not the issue. If running with the O2 connected, try disconnecting it completely.</p><p></p><p>I'm not much help here; wait until someone who knows their stuff chimes in. Good luck with it!</p></blockquote><p></p>
[QUOTE="RossKean, post: 1175609, member: 19880"] First thought was a dirty or faulty injector. Do I understand that you cleaned them after the problem started? (could still be an issue.) Also, I would try pulling the Power Commander out of the system and re-connect the O2 sensor to see if that makes a difference; even if you have no intention to run it this way long-term. Failures or problems with PC units are not common but they do happen. Coils/wires replaced before or after problems started? Again, a bad coil/wire could cause your symptoms. Does this happen more often in high humidity and/or rain? If the plugs still looked good immediately after an "incident" it seems less likely that is a rich fuelling problem but could be lean. Poor combustion (bad coil/wire) would result in a crappy-looking plug but this would pretty much clean itself up after a bit of running. I had a crappy running situation once that was traced to a semi-shorted O2 sensor; pinched in the timing cover after some maintenance. If you are running the PC with the O2 sensor disconnected, then that's not the issue. If running with the O2 connected, try disconnecting it completely. I'm not much help here; wait until someone who knows their stuff chimes in. Good luck with it! [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
2007 FJR1300A Intermittently Stalling at Idle or throttle release
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