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Buell Motorcycle Forum » Old School Buell » Archive through February 14, 2009 » Ignition timing?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! « Previous Next »

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Stripedape
Posted on Thursday, February 05, 2009 - 11:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i put a new ecm in my x1 lightning and fired it up and it ran great well i couldnt leave well alone so i was hearing that the tps needs to be reset so i did with a spy cable now it wont run without backfiring and sounds way out of time anyone have any idea what i did or what the timing sets at any help would be much appreciated..............rob in sac
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Natexlh1000
Posted on Friday, February 06, 2009 - 12:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you didn't change the timing to mess it up, you shouldn't try to fix it by messing with the timing.

It sounds like you messed up the TPS reset.
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Stripedape
Posted on Friday, February 06, 2009 - 01:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I RESET THE TPS AND THE AFV THATS IT . RAN WHEN I STARTED AND WONT RUN NOW IM ELECTRONICALLY CHALLENGED BUT CAN WORK ON ANYTHING MECHANICALLY.ANY OTHER THOUGHTS.......................NAT
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Firemanjim
Posted on Friday, February 06, 2009 - 01:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Go back to the last thing you did and recheck. Sure of the TPS reset procedure?And what was the AFV when you reset it.
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Stripedape
Posted on Friday, February 06, 2009 - 02:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

THE AFV WAS 100 PERCENT AND I DID THE ZERO OUT ON THE THROTLE THEN HIT THE BUTTON TPS RESET THEN TPS RESET FINISHED IN DIAGNOSTICS.THANKS FOR THE HELP......ANY DIRECTION IS APRECIATED.......
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Ratbuell
Posted on Friday, February 06, 2009 - 08:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

First step - find the key with your left hand that says "CAPS LOCK" on it. Press it. Posts are much easier to read without YELLING : )

I second the guess that the TPS reset is botched. It's electronics - it could *say* it went fine, but something could have a hiccup in it. Re-do it once or twice, and see if it changes things. Doesn't have to fix it, not right away, but if it *changes* it...you may have found your problem.

How's your throttle cable adjustment? You could be zeroing your grip, but the butterfly could be stuck open just a hair...
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Gowindward
Posted on Friday, February 06, 2009 - 10:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I know on my 12R and My S3 when the butterfly is completely close you can feel it in the throttle when you twist the throttle to open it a bit. The butterfly sticks ever so slightly. Get the airbox / aircleaner off so you can see the butterfly completely closed. Zero the TPS again and then before adjusting work the throttle and watch the voltage output on your pc. Make sure it's going back to zero each time you roll the throttle back closed. Then you know you have a good TPS reset.
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Firemanjim
Posted on Friday, February 06, 2009 - 10:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And what did you set the TPS to after you hit the reset? If your AFV was 100% why reset it?
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Firemanjim
Posted on Friday, February 06, 2009 - 10:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And try putting your old ECM back in,might have a bad one,it happens.
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Buellistic
Posted on Friday, February 06, 2009 - 11:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Does it not say somewhere in the FACTORY SERVICE MANUAL how to set up for and check you timing with a timing lite ???
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Kalali
Posted on Friday, February 06, 2009 - 11:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am not aware of any "timing lite/light" procedures but there is a procedure to check and set the static timing on the flywheel.
As for the timing "maps", most people recommend leaving them alone, even folks who are very familiar with tuning using the ECMSPY software.
Anyway, I am having a little trouble understanding this Statement: "..it ran great well i couldn't leave well alone". Do you mean it wouldn't idle on its own and you have to twist the throttle grip? If that's the case, then you may want to check the "cold start enrichment" settings. I know I had to fiddle around with those numbers when the temps dropped down.
Hope this helped.
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Dfbutler
Posted on Friday, February 06, 2009 - 01:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I remember a while ago there was a discussion that a new ECM had to be run at 3500 RPM for like 3 to 5 minutes to calibrate. Anyone else remember this?
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Oldog
Posted on Friday, February 06, 2009 - 02:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

DF to some extent that makes some sense on a brand new ecm. with a zero memory and need for say an afv of 90 VS 100 or 110

Robert, My first suggestion is one thing at a time, I agree with NATE on the surface it sounds like a botched TPS reset.

paraphrase of stated above
1. throttle plate must completely close to set ZERO position
2. The AFV should be 100 or close to it
3. Messing with any setting other than those is not a good idea IF you must Write down what you changed change one thing at a time and test the system before changing any thing else
4. Check the static timing if you wish
I do not recomend changing it unless you KNOW it is off, the indicators that are displayed on ecm spy are not the way to check or set it.

(Message edited by oldog on February 06, 2009)
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Buellistic
Posted on Friday, February 06, 2009 - 03:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Anyone ever think about the set up timing must be correct for the BRAIN BOX to have the correct reference timing to work properly !!!
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Jstfrfun
Posted on Saturday, February 07, 2009 - 04:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Maybe the timing is not off but a newbie fat fingered the ECM with ECMSpy and NEEDS to leave well enough alone!

That is the very reason VDSTS is still the safest program to use, you can't hurt any thing with it. But it costs money and of course these guys go for the free stuff they don't understand.

Get help.
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Kalali
Posted on Monday, February 09, 2009 - 01:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"...I remember a while ago there was a discussion that a new ECM had to be run at 3500 RPM for like 3 to 5 minutes to calibrate. Anyone else remember this?"

In a nutshell, what you are talking about is running the bike/ECM in the Closed Loop mode (for Tubers: steady speed around 40-60 MPH with engine RPM between 2500-4000, with minimum load on the engine) to allow the ECM "learn" the conditions through the O2 sensor.
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