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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » Archive through March 16, 2015 » A tps and afv question « Previous Next »

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Pontlee77
Posted on Tuesday, January 27, 2015 - 09:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hello,

A friend did a tps reset, and where he starts the bike if he doesent rev it, the bike goes don to 800 revs and dies, when it's Hot it holding sable 1050-1100 revs, any hint who this is happening?
When the afv is below 100 is it lean or Rich?

Thanks.
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Teeps
Posted on Tuesday, January 27, 2015 - 12:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

AFV reading below 100% means too rich, the ECM is removing fuel.

What year is the Ulysses?
Did he clean the throttle plate?
Was the engine warm when TPS was reset?
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Dualsportdad
Posted on Tuesday, January 27, 2015 - 10:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Did he reset afv as well? If so,check o2 sensor
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Pontlee77
Posted on Wednesday, January 28, 2015 - 01:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The bike is a 2007.
What are the throtle plates?
Tps was reset warm at 160 C

Thanks
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Teeps
Posted on Wednesday, January 28, 2015 - 12:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Throttle plate = butterfly valve = throttle valve
160c should have been warm enough.

Only other thing that comes to mind is whether or not the throttle plate was fully closed when tps was reset.
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Pontlee77
Posted on Wednesday, January 28, 2015 - 12:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the replies, i'll my friend to check it.
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Arcticktm
Posted on Wednesday, January 28, 2015 - 01:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And by fully closed, I'd specifically ask if the idle was FULLY backed off until no change in voltage was seen, and that they turned the throttle lightly in the closed throttle direction to make sure it was fully seated closed.
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Pontlee77
Posted on Thursday, January 29, 2015 - 02:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

After the reading was 0,0 he back end of one more turn and he reset it, his afv is around 105.
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Arcticktm
Posted on Thursday, January 29, 2015 - 12:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Did he happen to note what his idle TPS voltage was before the reset, versus what he set the idle at after doing the reset?

Just wondering if he ended up at a very different value (implying that the reset was BADLY needed, or perhaps for some reason not done right).

I assume he has already checked for a sticking throttle cable due to cable routing or maybe grips rubbing against handguards or something simple?
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Pontlee77
Posted on Thursday, January 29, 2015 - 12:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

He installed a sebring exhaust and a k&n air filtre so he needed to put race maps.
Thanks.
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Teeps
Posted on Thursday, January 29, 2015 - 12:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So this problem started after flashing some maps?
Was a race Eprom flashed to a standard (non race) ECM?

If so, there's the problem. A race Eprom will not work in a standard ECM.

Fuel or ignition race maps can be flashed to a standard ECM, not the full Eprom.
I have done both on my '06 Ulysses and could not "feel" (by seat of the pants) any difference.
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