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 Post subject: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 1:37 pm 
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Joined: Thu Jun 13, 2013 11:53 am
Posts: 29
Current ride: XB12R, 1125R Halcyon
Location: Ukraine
Hi everyone.
I had perfect experience with ukbeg's help in the past. That time it was Buell XB12R problem.
But now its Buell 1125R 2009 with jumping fuel pressure, I can see it in Diag mode 50-500kPa during idling and on the way.
What has been done: stator and rotor from EBR, new fuel pump, ecm from same Buell 1125R does the same pressure surging. Fuel pressure sensor installed from same Buell model either like ecm. All wiring inspected and insulated, no luck.
If I disconnect fuel pressure sensor the fuel pressure goes to 500kPa as described in manual, as long as bike run without this sensor all good, but after reconnection problem appear and bike run like crap.
With sensor removed from fuel rail and hole in rail pluged I press membrane of fuel pressure sensor and control the pressure, no any surging, steady figures
After all I installed resistor switch instead of fuel pressure sensor and tryed to adjust voltage impulse to ecm, that procedure either with no luck.
Could You be so kind and give advices, dear UKBeg community.
Thanks in advance. Valentyn
P.S. English is not my mother tongue.


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 2:12 pm 
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Joined: Wed Apr 29, 2009 7:27 pm
Posts: 664
Hi Valentyn, sorry I can't help you, but nice to hear from Ukraine!

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Try this on yer fueller...........


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 9:45 pm 
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Joined: Wed May 06, 2009 5:28 pm
Posts: 7096
Current ride: Muffin 2001 X1
Did this issue start when the stator and rotor were changed? If so is the battery voltage now stable and correct ?

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2001 X1 2009 1125CR 2006 Uly oh and some Chinese/German hybrid


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 9:58 pm 
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Joined: Wed May 06, 2009 5:28 pm
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Current ride: Muffin 2001 X1
The fuel pressure should be between 400 and 517 depending on engine demands which is controlled by the ecu on it's ground side . Is the TPS sensor reading OK? if not the ecu will be thinking that the engine demands are different to reality and may be shutting down the fuel.Have you done a TPS reset since fitting a different ecu?

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2001 X1 2009 1125CR 2006 Uly oh and some Chinese/German hybrid


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 10:10 pm 
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Joined: Wed May 06, 2009 5:28 pm
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Current ride: Muffin 2001 X1
Also the Map sensor or Baro sensor could possibly be confusing the ecu if they are faulty.

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2001 X1 2009 1125CR 2006 Uly oh and some Chinese/German hybrid


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 10:32 pm 
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Joined: Thu Jun 13, 2013 11:53 am
Posts: 29
Current ride: XB12R, 1125R Halcyon
Location: Ukraine
Thanks for reply kevmean

TPS shows 2-100% and reset done many times.
Btw I followed every tip in troubleshooting section and couldn't rectify this defect.
I did disconnect even baro sensor to see any changes, no success.


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 11:46 pm 
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Joined: Thu Jun 13, 2013 11:53 am
Posts: 29
Current ride: XB12R, 1125R Halcyon
Location: Ukraine
Hi 03
Are You from Poland? Your profile pic says turd polish, weird.


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 11:47 pm 
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utlanhaven wrote:
Hi 03
Are You from Poland? Your profile pic says turd polish, weird.

No, I'm in the UK!

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Try this on yer fueller...........


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 Post subject: Re: Buell 1125R glitch
PostPosted: Mon Nov 23, 2015 11:57 pm 
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Joined: Wed Apr 15, 2009 5:25 pm
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Location: Oswestry
:rotfl: Utlanhaven, you're English is better than 50% of others on here. Welcome on board lOl 8-)

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 Post subject: Re: Buell 1125R glitch
PostPosted: Tue Nov 24, 2015 12:04 am 
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Joined: Thu Jun 13, 2013 11:53 am
Posts: 29
Current ride: XB12R, 1125R Halcyon
Location: Ukraine
Forgot to say, I did disconnect both fuel injectors one by one while bike was idling and even flush them, no success.
IAC cleaned either.
Really confused, because looks like I did everything


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 Post subject: Re: Buell 1125R glitch
PostPosted: Tue Nov 24, 2015 12:13 am 
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Joined: Thu Jun 13, 2013 11:53 am
Posts: 29
Current ride: XB12R, 1125R Halcyon
Location: Ukraine
Adam wrote:
:rotfl: Utlanhaven, you're English is better than 50% of others on here. Welcome on board lOl 8-)

Thanks Adam, I am long time here, You can check my post about Xb12R problem, quite interesting story.
Can not attach pic with me and Erik, "add the file" button doesn't work.


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 Post subject: Re: Buell 1125R glitch
PostPosted: Tue Nov 24, 2015 12:17 am 
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Joined: Thu Jun 13, 2013 11:53 am
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Current ride: XB12R, 1125R Halcyon
Location: Ukraine
03 wrote:
utlanhaven wrote:
Hi 03
Are You from Poland? Your profile pic says turd polish, weird.

No, I'm in the UK!


Now I got You. Tou Teasing and provoking them, right?


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 Post subject: Re: Buell 1125R glitch
PostPosted: Tue Nov 24, 2015 12:32 am 
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Location: Oswestry
utlanhaven wrote:
03 wrote:
utlanhaven wrote:
Hi 03
Are You from Poland? Your profile pic says turd polish, weird.

No, I'm in the UK!


Now I got You. Tou Teasing and provoking them, right?



Something is getting lost in translation here lOl English, being the weird language that it is, often has one word with several meanings. Folk that live in Poland are called the Polish. We also have a substance known as polish, which is a waxy grease rubbed into surfaces to make them shine, especially leather. 'To polish a turd' is an English way of saying that you're making a crap thing look good lOl 8-)

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If your dreams don't scare you, they are not big enough.


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 Post subject: Re: Buell 1125R glitch
PostPosted: Tue Nov 24, 2015 8:11 am 
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Joined: Thu Jun 13, 2013 11:53 am
Posts: 29
Current ride: XB12R, 1125R Halcyon
Location: Ukraine
Adam wrote:
utlanhaven wrote:
03 wrote:
utlanhaven wrote:
Hi 03
Are You from Poland? Your profile pic says turd polish, weird.

No, I'm in the UK!


Now I got You. Tou Teasing and provoking them, right?



Something is getting lost in translation here lOl English, being the weird language that it is, often has one word with several meanings. Folk that live in Poland are called the Polish. We also have a substance known as polish, which is a waxy grease rubbed into surfaces to make them shine, especially leather. 'To polish a turd' is an English way of saying that you're making a crap thing look good lOl 8-)

Oh, yeah! Somehow I picked Polish, not polishing. Anyway often very interesting info comes after stupid question.


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 Post subject: Re: Buell 1125R glitch
PostPosted: Tue Nov 24, 2015 8:18 am 
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Current ride: CB1300 & Z750R
Location: Esslingen/Neckar, Germany
utlanhaven wrote:
I can see it in Diag mode 50-500kPa during idling and on the way.


Idle measurements do not allow conclusions for riding issues, because it's very different in many aspects. Please record a log (from cold start to the point the error occurs while riding), then post a link to the log.

Control loop implementation in DDFI-3 is quite solid, as far as I can tell from the logs I saw.

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