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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » 2007 XB12x ULY just drops power at 4grand « Previous Next »

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Gunner01
Posted on Monday, May 21, 2018 - 10:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

2007 UlY with 33,000 on the clock ran fine last fall over winter did fork seals, intake seals, new injectors and plugs. I took out this spring and when you get on the bike at about 4000RPM the bike just cuts out until you let off the throttle then its fine again till you get on it then the same thing happens. tried a different ECM, ran a ground from the battey to the grd wire on frame, plugged in my Buelltooth and changed the AFV to 100% it was at 85% before, changed the coils and a TPS reset all of these were done in stages trying to figure this problem out!! I am at a loss not sure witch way to go next.. Any help would be great
Joe
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Gabby_duck
Posted on Wednesday, June 13, 2018 - 06:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

During fuel pressure test owner went for test ride and bike ran great. It end up being that he had disconnected the Iat (inlet air temperature sensor) anyway he installed a different Iat and fix the problem. Rare as it may be for a bad Iat if it is bad unplugging it might get you home or the nearest part store. Same Iat used on 90s ford F-150
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Gabby_duck
Posted on Wednesday, June 13, 2018 - 06:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On a ambient temperature the ET (engine temperature sensor) and the Iat (inlet air temperature sensor shouldn't be more than 10 deg temperature different between the two sensors. Use ECM droid or Ecm spy etc to do this test. Both sensors are thermisters which change resistance that changes voltage that is used by the ECM.
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Gabby_duck
Posted on Tuesday, July 03, 2018 - 04:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

To be continued...? Owner still has issue with the bike.
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