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FJR Motorcycle Forums
Technical & Mechanical Problems
Gen III 2013 FJR Off/On Throttle Abruptness
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<blockquote data-quote="QuikSilver" data-source="post: 1189767" data-attributes="member: 1699"><p>Thanks for your input Ion Beam. FYI -The missing numbers occur whether the engine is hot or cold.</p><p></p><p>My FJR was at the shop when you replied so I was not able to perform the tests you suggested. The dealer says they contacted Yamaha Technical Representatives and were told that this jumping of a few numbers was “perfectly normal”. The dealer also observed the jumping of a few numbers on a new 2014 FJR on the showroom floor. Nonetheless, they agreed to replace my TPS “because I was a valued customer”.</p><p></p><p>After TPS replacement, I tested the new TPS “cold” at about 80ºF and the jumping was less, only skipping 2 or 3 numbers. After 12 miles and an engine temp of 190ºF, the jumping increased to 3 to 4 numbers. It seemed to me that the on/off throttle abruptness had been significantly reduced. When I returned to the dealer (after another 12 miles), the jumping was only 1 to 2 numbers. I decided they probably had done everything I could reasonably expect so I took my baby home. When I got there, the jumping was 4 numbers on both TPS1 and TPS2. I just got back from a 700 mile trip and am reasonably happy with the EFI response.</p><p></p><p>Another interesting observation is that increasing the throttle slightly at idle in neutral does not cause any sudden increase in RPM.</p><p></p><p>Regards,</p><p></p><p>QuikSilver</p></blockquote><p></p>
[QUOTE="QuikSilver, post: 1189767, member: 1699"] Thanks for your input Ion Beam. FYI -The missing numbers occur whether the engine is hot or cold. My FJR was at the shop when you replied so I was not able to perform the tests you suggested. The dealer says they contacted Yamaha Technical Representatives and were told that this jumping of a few numbers was “perfectly normal”. The dealer also observed the jumping of a few numbers on a new 2014 FJR on the showroom floor. Nonetheless, they agreed to replace my TPS “because I was a valued customer”. After TPS replacement, I tested the new TPS “cold” at about 80ºF and the jumping was less, only skipping 2 or 3 numbers. After 12 miles and an engine temp of 190ºF, the jumping increased to 3 to 4 numbers. It seemed to me that the on/off throttle abruptness had been significantly reduced. When I returned to the dealer (after another 12 miles), the jumping was only 1 to 2 numbers. I decided they probably had done everything I could reasonably expect so I took my baby home. When I got there, the jumping was 4 numbers on both TPS1 and TPS2. I just got back from a 700 mile trip and am reasonably happy with the EFI response. Another interesting observation is that increasing the throttle slightly at idle in neutral does not cause any sudden increase in RPM. Regards, QuikSilver [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Gen III 2013 FJR Off/On Throttle Abruptness
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