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Motorcycle Forum / General / Yamaha / July 2005Vstar 1100 Runs Rough @ Low RPM
My '99 Vstar 1100 has started to run rough at lower RPMs. Sounds as though it's dropping spark every once in a while. I replaced the plugs, but the problem is still there. When I get up past 3,000 RPM, the problem seems to go away. Has anyone had problems like this? Thanks. Dan >My '99 Vstar 1100 has started to run rough at lower RPMs. Sounds as though >it's dropping spark every once in a while. I replaced the plugs, but the >problem is still there. When I get up past 3,000 RPM, the problem seems to >go away. Has anyone had problems like this? Thanks. > >Dan did you have the coils tested? Maybee the TPS? > My '99 Vstar 1100 has started to run rough at lower RPMs. Sounds as though > it's dropping spark every once in a while. I replaced the plugs, but the > problem is still there. When I get up past 3,000 RPM, the problem seems to > go away. Has anyone had problems like this? Thanks. > > Dan Thanks for the tip. How do I verify? > Maybee the TPS? > [quoted text clipped - 4 lines] >> >> Dan If it isnt to late, try this Palle CHECKING AND ADJUSTING THE THROTTLE POSITION SENSOR Before adjusting the throttle position sensor, the engine idling speed should be properly adjusted. 1. Inspect: throttle position sensor a. Disconnect the throttle position sensor coupler. b. Connect the pocket tester (W 1k) to the throttle position sensor. Tester positive lead blue 1 Tester negative lead black 2 c. Check the throttle position sensor resistance "R1". Out of specification Replace the throttle position sensor. Throttle position sensor resistance "R1" 4 6 kW at 20C (68F) (blue - black) d. Connect the pocket tester (W 1k) to the throttle position sensor. Tester positive lead yellow 3 Tester negative lead black 2 e. While slowly opening the throttle, check that the throttle position sensor resistance "R2" is within the specified range. Out of specification Replace the throttle position sensor. Throttle position sensor resistance "R2" 0.56 0.84 kW to 3.01 4.51 kW at 20C (68F) (yellow - black) 2. Adjust: throttle position sensor angle a. Loosen the throttle position sensor screws 1 . b. Turn the throttle position sensor in direction a or b until the specified closed-throttle resistance is indicated on the pocket tester. > Thanks for the tip. How do I verify? > [quoted text clipped - 6 lines] >>> >>> Dan kw is wrong. Should be k.ohm palle > If it isnt to late, try this > [quoted text clipped - 90 lines] >>>> >>>> Dan |
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