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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through August 04, 2013 » Bad Fan or somethng else « Previous Next »

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Deltablue
Posted on Monday, July 29, 2013 - 09:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So I got home Friday night ant the check engine light came on. I didn't think too much of it as it went out when I pulled into the garage. This morning everything was great till I pulled off of the exit ramp for work. I noticed the check engine light go out. When I got to the stop light it came on and stayed on. When I got moving again it went out, and would come on at stop. When I finally got to work and shut down I noticed the fan didn't come on. I switched the ignition off and on then the Engine Cut Off, and it ran on High for half a second and cut out, like it has no low speed. Is this a fan issue or an ECM issue? or Something else entirely?
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Electraglider_1997
Posted on Monday, July 29, 2013 - 11:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The first thing I would check would be the oil level and also the miles since the last oil change. If you had the EG Oil Temp dipstick you would know how hot your oil is and this correlates directly to whether the fan should be on or not.
http://www.badweatherbikers.com/cgibin/discus/disc us.cgi?pg=next&topic=142838&page=462457
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Deltablue
Posted on Monday, July 29, 2013 - 11:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes I was originally thinking oil, but after a 50 mile all interstate commute my fan almost always comes on. The fact that it didn't led me to the fan, but I will check the oil level.
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Teeps
Posted on Monday, July 29, 2013 - 12:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Easy enough to test the fan.
Locate the ground circuit (black/orange wire in the gray ECM connector.)
Carefully back probe the circuit (at ECM terminal) and touch it to ground momentarily.
ECM can also be disconnected, just make sure to ground the correct wire.

One of 3 things should happen:
a.) fan runs on high speed. Fan is ok.

b.) nothing happens Blown fuse or open in fan circuit or fan.

c.) sparks Fan internally shorted, ECM could also be damaged too.
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Deltablue
Posted on Tuesday, July 30, 2013 - 09:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So more symptoms. The battery is totally dead. Put it on the charger overnight and it was still dead. Bought anew one and went to put it in and the old one was charged. The engine light only came on at low speed idle. I was leaning toward bad battery but now I'm not sure. I'll see if the symptoms continue tomorrow. Any other ideas?
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Fltwistygirl
Posted on Wednesday, July 31, 2013 - 09:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Deltablue
Did you check to see if it threw any error codes? When we were troubleshooting what turned out to be the bad voltage regulator on our xt we would ride it hope for check engine light then read the codes when we got home. There is a step by step outline of how to check the codes as well as what each code is in the check engine light on xt thread as well as other places here on bw. Good luck.b.
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Deltablue
Posted on Wednesday, July 31, 2013 - 12:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes, that was my next step, I have another post looking for the data dongle so I can pull a trouble code.
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Pos90
Posted on Wednesday, July 31, 2013 - 05:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Delta,
If you need a hand figuring that thing out let me know. I'm off work Friday-Sunday.
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Deltablue
Posted on Friday, August 02, 2013 - 07:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Well, so far so good, New battery in, bike roared to life this morning like never before. Rode to work, no trouble codes, fan ran per normal at the end. I'll keep an eye on it, if it is a charging issue it will show it's self soon. Thanks for the sounding board guys.
DB
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