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08xb12xtbuellrider
| | Posted on Sunday, March 16, 2014 - 06:56 pm: | 
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2008 xb12xt
Runs great with original ecm, which was cracked once but I dried it out and sealed it up. I went to Harley and bought a new one last year and had them flash it. It ran and idled on trailer and they never test drove it. They couldn’t figure out how to do the tps reset, they “couldn’t find the cable” which they didn’t know it was done with key and throttle. So when I got it home from them I went to go for a ride, it wouldn’t barely rev, it spit and sputtered. I did the tps reset with the throttle and still didn’t work. I am running the E3 plugs. I received the EBR Pre-Programmed ecm for my D&D exhaust, installed that and it idles like its really rich. When I go to rev it it blubbers at about 3k rpm. When I go to ride it it blubbers at 3k and opens up to redline but around 6k feels week to want to pull. If I’m going 55mph in 5th and just open it up it barely speeds up. If I pull over and throw my original ecm back on and do a quick tps reset, it pulls like crazy and runs great just pops on decal  I put in ngk iridium plugs today and gave the EBR one last run and it seemed to help a little but if your not past the 3k power band when you open it up it falls flat on its face and pops and jerks. So my concern is with the ecm being right, or what else could there be? I have no engine codes. My only mods are, open air box mod, D&D exhaust. I noticed the black connector socket on the EBR ecm pulls back from the housing if you try to flex it lightly, so my concern is that the ecm is bad from the get go. But why does it run like crap with the new ecm from Harley and this one? Coinsidence? Then with the sealed up cracked one it runs great. I did check the throttle cable play and adjusted it so there's no play, I checked the throttle body butterfly and its closed at zero throttle and straight up and down and full throttle. I’m stumped.
(Message edited by 08xb12xtbuellrider on March 16, 2014) |
Teeps
| | Posted on Monday, March 17, 2014 - 12:15 pm: |
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Have you consulted EBR?
What do they have to say about the problem? |
08xb12xtbuellrider
| | Posted on Monday, March 17, 2014 - 06:43 pm: |
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Yes I sent the above message to them this morning and called and already mailed it back and he basically said they would look at the data thats stored on it, he said its not much but might be able to figure it out. I explained in full detail what it did. |
Xbgeorge
| | Posted on Tuesday, March 18, 2014 - 10:13 pm: |
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I had a similar situation. It turned out the my O2 sensor was bad. Replaced it and it ran better than ever. It was something about the stock ECM allowing crap and the EBR ECM not. EBR informed me that the O2 sensor doesn't throw a code or light. |
08xb12xtbuellrider
| | Posted on Wednesday, March 19, 2014 - 08:00 am: |
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George you got a part number for that off hand for my 08 xb12xt? |
08xb12xtbuellrider
| | Posted on Wednesday, March 19, 2014 - 08:09 am: |
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I was looking.for the buell part interchange was hoping i could just run to parts store and cross o2 sensor over instead of going to.a dealer. |
Xbgeorge
| | Posted on Wednesday, March 19, 2014 - 02:21 pm: |
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I don't have the part number off hand but you should be able to get it from any Buell service center. American Sport Bike has it here: http://americansportbike.com/newdir/Item/16079
I went through my emails from EBR. This is what they had to say:
Hi George,
I received your ECM today. After hooking it up and looking at the data, it appears that there may indeed be an underlying issue with the bike that is causing it to lean out the adaptive fuel value. It was much lower than we would expect to see for a bike running at the elevation you are at. The value I’m speaking of is a data that is input to the ECM from the Oxygen sensor based on the air/fuel ratio that it sees. It will then globally lean or richen the mixture based on this data. So, something like a bad or failing oxygen sensor could cause this problem like this, but not cause a check engine light. This is not the only possibility, but it is one. A reason that this may have happened with the EBR ECM right away, and not the stock ECM, is that with the stock ECM, you are already starting with a very lean mixture with that muffler installed and it will only be able to richen/lean out so much under the necessary conditions. Now, with a correctly mapped ECM for the combination, if something else in the mix is out of whack, it can show up easier.
So, we reset the ECM, and it’s on its way back to you. You will need to perform the TPS reset again before starting the bike.
Let me know if you have any questions, and let me know when you get a chance to get some miles on it and can give me some feedback.
Thank you,
EBR Tech Support
I then talked to them on the phone and they recommended replacing the O2 Sensor. It ran better than new after. |
08xb12xtbuellrider
| | Posted on Thursday, March 20, 2014 - 11:47 pm: |
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I talked to them today and he said the ecm doessnt seem to be defective. Buy hes replacing it anyways...... hrs saying it could most likely be a fuel delivery priblem... but it seems to be fine with the stock ecm... i bougjt a o2 sensor but have no idea how to get in that tight spot to change it so as far as fuel deliver.... fuel pump and fuel pressure regulator thats all right? How bad is the fuel pump to change? Whats all to it and is the fpr easy to get to? |
Ducbsa
| | Posted on Friday, March 21, 2014 - 06:55 am: |
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Can't find the bookmarks now, but when I took my pump out I found some good info in the Knowledge Vault and the Service Manual. |
Firemanjim
| | Posted on Wednesday, March 26, 2014 - 12:35 am: |
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Ran into this with a couple EBR ecm's. They have redone the cold start enrichment and it is still adding a big enough percentage of fuel when the bike goes into learned fuel and then--BAM, bike pulls a bunch of fuel from all the map, bike runs like crap.
I talked to someone back there about it but he never got his head around what I was saying. All you had to do was compare the stock ecm cold start table to theirs to see the difference. |
08xb12xtbuellrider
| | Posted on Sunday, March 30, 2014 - 10:58 am: |
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Yea its very rich on idle. Overly rich. On a cold start it doesnt lope. Its very easy to flood now but the new ecm they sent me actually works finally. |
Tlmnvr2l8
| | Posted on Sunday, March 30, 2014 - 04:43 pm: |
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I just changed my O2 sensor, you have to rotate the engine down to access it, check your shop manual |
08xb12xtbuellrider
| | Posted on Sunday, March 30, 2014 - 09:12 pm: |
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I found a way where I didn't have to rotate my engine  It was just a bit of a squeeze and with the right tools i was sucessful |
Gabby_duck
| | Posted on Saturday, June 07, 2014 - 10:13 pm: |
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no engine rotation needed did it per 09 service manual. 1.5 to 2hr job. I used a o2 socket from autozone that has a off set on the socket.don't buy the straight longer o2 socket get the stubby one with off set.remove sock fan and worked the o2 thru the removed fan access hole. |
Jfkersh
| | Posted on Sunday, June 08, 2014 - 07:30 pm: |
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XB9R problem, I could not get it to run well at 3000 when you are idling through town ect. I found the early 03 model has injectors that are not directed into the cylinders unlike later models. So I replaced the XB9 throttle body with an XB12 and headers as well. Coupled with a standard muffler with all the baffles removed. Everything is better now.
Do not try to run a race ECU with a electronic jet kit, I burnt my ECU and the bike would not idle on the front cylinder. When I swapped back to std one all is good. The race module smells burnt. |
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