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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through October 27, 2012 » 04 XB12S Stuttering.. « Previous Next »

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Timmyj
Posted on Wednesday, May 30, 2012 - 01:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Long time lurker; first time poster!

At around 1500-2500 rpms the bike stutters.. I'm giving it steady throttle, but it seems like for half a second at a time the engine isn't getting any gas about half a second apart.

This will happen in any gear after the bike has warmed up. The first time this happened I pulled over to a gas station and left the bike on; I thought I hadn't warmed it up enough yet. And so the problem DID go away the first time. I've been trying to perform a controlled experiment. It seems like the problem goes away when the bike is HOT.

Any ideas?
There is a slight knocking noise at the relatively same rpm range; could this be related(I went to a Harley dealership about the knocking noise and they said it might be coming from the primary or front hydraulic lifter)?

I should also mention that I can indeed reproduce the problem while in neutral, and when I say the problem goes away(so far) when the bike is hot I mean when the fan comes on whilst running.

I'm not very technical, so please explain it to me like I'm an 8 year old.

(Message edited by timmyj on May 30, 2012)

(Message edited by timmyj on May 30, 2012)
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Timmyj
Posted on Friday, June 01, 2012 - 01:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Maybe a video will help.

http://www.youtube.com/watch?v=sSB1-CZENVs
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Two_seasons
Posted on Saturday, June 02, 2012 - 01:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I watched the video and listened to what you describe.

It would appear that you may need to do a TPS reset, that is, a Throttle Position sensor.

I'm not familiar with XB's, however, maybe you can use ECMspy to do the reset. You'll need to buy a cable to connect your diagnostic port to a laptop. That can be had here...http://www.americansportbike.com/shoponline/ccp0-p rodshow/A9317.html

Sorry this info took so long to get to you, but we are partying and riding this time of year.

Welcome to BadWeb Timmy.
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Timmyj
Posted on Saturday, June 02, 2012 - 06:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Thank you!

I don't have the equipment to do that, so I'll give the mechanic this tip.
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