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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through February 11, 2009 » Disconnect during TPS reset « Previous Next »

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Acav80
Posted on Wednesday, February 04, 2009 - 06:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hey everyone, got a question that search is turning up an answer for.

I just got through trying my first TPS reset on my 12X, and I'm not sure if I succeeded. I read all the info on how to do it, but the issue I ran into was this:

After turning out the idle adjust screw to 0% on ECMspy overview page, holding throttle closed and clicking "reset tps" under "functions", it seems that the connection to the ECM was severed. I got no response on screen when I went to turn the idle screw back in, and had to click "online/offline" again to get activity on the overview screen.

I tried this several times and it did that each time.

I then went ahead and adjusted to 5.1% as recommended. When I started the bike to check tickover it was idling really low, about 800 rpm or less and stalling out. I had to turn the screw in further (to about 6.8%) to get to 1100 rpm at idle.

Anybody got ideas here? I'm not sure my TPS was actually reset.
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Moosestang
Posted on Wednesday, February 04, 2009 - 10:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It should say at the bottom of the diagnostics page reset successful. If you don't see that, then it didn't reset it.

1100 rpms is to high for idle. 1,000 or just below is what I shoot for. 1050 is what the manual calls for.
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Xoptimizedrsx
Posted on Thursday, February 05, 2009 - 10:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

what moose said is 100%

1000 975 works great.

That resolves the hang at 2000/1800 rpm quite well on 2007 and older efi bikes.

mike
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Acav80
Posted on Thursday, February 05, 2009 - 10:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks for the responses guys. Will recheck idle speed today.

"TPS reset" was observed in the message window of diagnostics page after each attempt, so it must have worked. Seemed odd that clicking "online/offline" was necessary to get readings again after the tps reset. Have you observed this also?

Additionally, is it a concern that idle screw must be turned in beyond 5.1% (ecmspy recommended) to achieve proper idle?
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Moosestang
Posted on Thursday, February 05, 2009 - 10:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

5.1% is just a guide line or minimum % for tick over as I like to say. I to have to re-click the keys. It must have to go offline when it resets.

Sounds like you did it right. When I do a tps reset, I turn the idle screw until the tps % stops going down. Then I manual close the throttle by hand and turn the screw a few more times, push reset button and voila, tps reset complete.
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