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Buell Motorcycle Forum » XBoard » Archive through April 19, 2010 » Help, neither bike will run after TPS reset « Previous Next »

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Living_illusions
Posted on Tuesday, April 13, 2010 - 06:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hey guys...We are at the Dragon, rode it today. Me in all my wisdom decides to do a TPS reset on both our '07 XB12r's. I do everything per the instruction. Percentage to 0, slight clockwise turn & still 0, TPS reset, percentage up to 5.1. Start bikes and they won't stay running, but I take them on a ride like others say so it can learn.

Neither bike will idle at all. I have been working on this for hours now and have made an appointment to stop into Wheelers tomorrow. He says it's somewhere in the numbers.

Can anyone here give me some solution. It would appear I did the exact same thing wrong to each bike, but I sure don't know what that is.

Thanks,
Kevin
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Terrys1980
Posted on Tuesday, April 13, 2010 - 06:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Are you following the instructions on the ECMSpy Tuning guide? Did you allow the bike to get to 285 degrees?
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Living_illusions
Posted on Tuesday, April 13, 2010 - 06:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I did everything per the instructions. I then took the bike out at 70-80 MPH for 20 minutes. It still will not idle.

Kevin
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Gentleman_jon
Posted on Tuesday, April 13, 2010 - 06:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Not sure exactly what you mean by won't idle at all.

There is an idle adjustment, and it often needs adjusting after the TPS has been reset.

Have you tried that yet?
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Terrys1980
Posted on Tuesday, April 13, 2010 - 06:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have had mine do this before. I would just crank the idle up. Eventually I had to bring it back down once it settled out after riding.

Make sure you lightly hold the butterfly closed when you click TPS reset and you can bring the TPS degrees up between 5.2-5.6.
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Living_illusions
Posted on Tuesday, April 13, 2010 - 07:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What I mean is I start it...it runs very rough and will not stay running, even after I brought it up to temperature.
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Killroy134
Posted on Tuesday, April 13, 2010 - 10:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Are you certain the plate is completely stuck in the throat before zeroing it? If you hit the throttle you should feel it stick. After resetting it and bringing it back, you may need to adjust it further to get it to idle at around 1050 while at operating temp.
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U4euh
Posted on Tuesday, April 13, 2010 - 11:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Your at a higher elevation so you might be getting readings that the ecm WAS running everything at and with the new values might have changed something. I'd run them a bit longer and see what happens. Kinda hard to keep a steady 3000 rpm range up there isn't it?
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Id073897
Posted on Wednesday, April 14, 2010 - 12:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'd run them a bit longer and see what happens

Idle is closed loop so you can run them as long as you like, it will not affect it.
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Firemanjim
Posted on Thursday, April 15, 2010 - 02:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

You need to set the TP at a higher value then to get it to idle.5.1 is awful low.I see them as high as 6.1 to get a good idle.
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Pkforbes87
Posted on Thursday, April 15, 2010 - 05:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

yep the 5.1 value given in the EMCSpy tuning guide is just a general starting point. The final goal is for the bike to idle at 1050 rpm while at operating temp.

My problem on the X1 after installing a 1250 kit and 10.5:1 pistons is getting the cold start enrichment values fixed. The way TPS is set on it right now, it idles at exactly 1050 while warm, but I have to manually add a touch of throttle for a minute or so when starting it cold.

You mentioned you ran 70-80 mph to get the ECM to learn.. it doesn't learn in a specific MPH range. it learns while cruising somewhere between 3-4k RPM with minimal load on the engine (no rapid throttle movements, acceleration, or engine braking)
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Living_illusions
Posted on Thursday, April 15, 2010 - 08:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Got it all running at Wheelers. Ken definitely knows his stuff. Basically the idle adjust screw just wasn't backing all the way out.

Thanks for the help guys.
Kevin
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