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Joshboyz
Posted on Sunday, June 19, 2022 - 06:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

First of, Apologies to forum moderator, I have to open a new thread. Sincere appreciation to Ray S he has been a guardian angel helping me with figuring out issues with my bike.

History of my bike issue is found in this thread http://www.badweatherbikers.com/buell/messages/142 838/892519.html?1653372673

I took apart my ECM and re-soldered the joints as advised to fix the intermittent Blinks.

I believe that fixed the Red light blinks.

I got the Buelltooth Dongle to read errors, I got error 11 which mean TPS error. With the Help of Ray i was able to do A ground Clean and TPS reset.

Before hand i had issues with the bike, after running a few miles. I get a very terrible feedback from the bike. Symptoms like Severe Coughs from the Exhaust, Bike Suddenly goes off.

After the Above fix i decided to go for a ride today, and issue still persist, this time i got a safer place to park, hooked up the dongle. No errors, However AFV was about 116%. i did reset to 100%. This made no effect as the bike ran too poor. The constant cough turned into a loud shoot and bike jerks and dies. By this time i was already in traffic so i cannot park the bike i just became creative with the Clutch as i would pull in, Throttle and release so the bike does not die while I'm moving slow.


I noticed that the bike idles well, however when i try to throttle it dies

I got to my destination, hooked up the buelltooth dongle.. Still no errors. AFV is on 100%. I left the bike for about 2 hours, it's cool and everything seem to run fine again.
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Johnshore
Posted on Sunday, June 19, 2022 - 12:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

cam position sensor?
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Joshboyz
Posted on Sunday, June 19, 2022 - 03:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Okay I need to replace that??? Or what do you think I do.? It's so strange that everything is back to normal once the bike is cold again
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1_mike
Posted on Tuesday, June 21, 2022 - 02:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Give the intake manifold/throttle bodies a check for leaks.
With the engine running / idling, spray some carburetor cleaner (or Brakleen) at the manifold to cylinder head joints.
If the engine rpm goes up...that's one of your problems.

New o-rings are cheap.

Mike
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Akbuell
Posted on Tuesday, June 21, 2022 - 11:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What Mike said. And don't forget to pay attention to the fuel rail and where the injectors mount to the rail.

A quick check: Take the bike for a ride, and when it starts acting up, open the fuel cap and ride some more. If the problem goes away, the fuel tank vent is clogged. Easy enough to check before doing the carb cleaner test.

Hope this helps, Dave
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Joshboyz
Posted on Sunday, June 26, 2022 - 06:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I went riding today, after few miles bike started sputtering again. I took off the fuel cap and rode some more miles. And no changes, I also unplugged the BAS however no change.

See video here https://youtu.be/M7GWE-B9nm0

What else?
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Johnshore
Posted on Sunday, June 26, 2022 - 12:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A link from here that has another link also from here.
http://www.badweatherbikers.com/buell/messages/142 838/789863.html#POST2554608

Its the tach needle that catches my eye
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Joshboyz
Posted on Sunday, June 26, 2022 - 01:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thank you very much. All finger seem to be pointing to CPS. does anyone have link to where I can get one that'll fit this bike. I searched through ebay. I did not see any.
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Johnshore
Posted on Sunday, June 26, 2022 - 11:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

https://st-paul-harley-davidson-buell.myshopify.co m/products/32443-04-genuine-buell-timing-sensor-as sy-all-2004-2007-xb-models-b1-p?rq=yr_2006~mk_buel l~md_ulysses-xb12x~yt_electrical-/-ecm-/-sensors-/ -lighting
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Heavy18
Posted on Wednesday, July 06, 2022 - 12:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm late to the game here but just wanted to share my recent experience:

I was having what seems to be the same issue as you - terrible coughing and LOUD backfires but only after heating it up good. If I drove 70 on the freeway for 15-20 min it was a sure thing. After acting up if I drove it at 40-45 in 5th gear the problem would slowly go away and never return as long as I kept it at that speed/RPM.

I was also thinking CPS but when I opened up the cover it was obviously very new... I bought the bike with this issue existing so I'm fairly certain the previous owner had gone down the CPS route already. That led me back to the ECM.

When I bought the bike my ECM had marks on it from the seat and I had already re-positioned it however the damage was already done. When I cut it open I could see about 2/3 of the solder joints had visible fractures (most were only visible with a magnifying glass). I work in manufacturing and I new that since I've never had formal training I would not be able to re-solder the joints sufficiently. The only way to know for sure was a new ECM.

I bought an ECM on eBay - new in box - installed, performed a TPS reset and my problem was immediately, 100% eliminated. (I got the ECM for $250 shipped which is about what the CPS was going to cost.)

MY OPINION: If you know you had solder fractures I HIGHLY recommend a new ECM. Another option is to have a certified solder tech re-solder all the joints, not just the ones with visible cracks. But if your problem persists there is no real way of knowing it still isn't an ECM issue - the only way to truly rule out the ECM is with a known good unit, either new or out of a good-running bike.

BTW, if you are a certified solder tech, then by all means carry on good sir!
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Evilphoton
Posted on Thursday, July 14, 2022 - 12:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

the guy that had my bike before me bought it new and it was a pain in the ass the whole time. iím at sea level. the only thing that worked was richened both fuel maps 1% and also enrichen the cold start options. i can post a pic of my settings if you want. it solved my problem. i had chased everything.. grounds, voltage drop/resistance tested all the wires, new ecu/coil, etc.. replaced from the top of the throttle body to the heads - including using those flanged james gaskets, no change.
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