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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through July 01, 2010 » Check engine light and low fuel light come on......... « Previous Next »

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98s1lightning
Posted on Tuesday, June 15, 2010 - 01:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

At the same time at random on start up but both go off after a few minutes of riding. Low fuel light seems NOT to be working but has worked in the past. The only recent mod is the K&N filter.
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Jion
Posted on Tuesday, June 15, 2010 - 02:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have the same thing when the outside temperature is below 50F or so. There is an old post indicating the instrument cluster and/or fuel sensor needs to be replaced. Looked but did not find it.
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Pizzaboy
Posted on Tuesday, June 15, 2010 - 02:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yep that happens to me as well from time to time... and yes i noticed the same thing... really only happens when the temps drop below 50 degrees...
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Aj2010
Posted on Tuesday, June 15, 2010 - 02:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Check Engine and low fuel lights used to come on together some times after I filled the tank). Recently they come on together intermittently (so far only when less then 40km on full tank). Outside temperature doesn't seem to make a difference. One time I also briefly got a system error message. Dealer says they can not find anything wrong. Let me know what you guys find out please.
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Tpoppa
Posted on Tuesday, June 15, 2010 - 02:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The fix is to have the instrument cluster replaced under warranty. The new one will have updated firmware that handles the low fuel sensor properly.
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Mikellyjo
Posted on Tuesday, June 15, 2010 - 02:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Myself and a few others on here have had the same issue. It is an easy fix. I took it in to have it looked at but they couldn't replicate the problem. No worries, it shows up as a historical code when they hook up the diagnostic machine. That data was sent along to HD and it was determined that I was a candidate for a new IC. IC came in in about a week and the cluster was swapped same day.



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Kicka666
Posted on Tuesday, June 15, 2010 - 05:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I had the same problem with my 09 CR, I had the pump & fuel pressure reg replaced under warranty no problems since.
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Zac4mac
Posted on Wednesday, June 23, 2010 - 01:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

There are two issues at play here.

If the CEL and LFL lights come on early and shut off around Op Temp, most likely a bad Rev IC(new is 6.2 or 7.1)- new IC is in order as only ECM can be flashed, not the IC.
Long story, but basically it's an historic.

If the LFL and CEL come on after reaching Op Temp and linger for a while or never go out, depending on the cold(I've seen 4 dF on mine) it's most likely the sensor, a thermistor device - new fuel pump.
In this case it's a "real-time" issue.

I have a Rev 6.1 IC but no issues since the new fuel pump.

Zack
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Rkc00
Posted on Wednesday, June 23, 2010 - 07:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Zac4mac
I do not have any backlights on the new IC that your shop installed last week. Last night was the first time riding it at night and no lights in the IC. Have you seen this before.
Mike
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Andros
Posted on Wednesday, June 23, 2010 - 09:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

mine did the same. Common problem. Its a defect fuel sensor in the fuel pump. Only thing to do is replacing the entire fuel pump. Its a warranty job.
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Zac4mac
Posted on Wednesday, June 23, 2010 - 10:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Mike - have you gone into Set-up Mode?
The display may be turned off, it goes to 6.

Zack
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Boogiman1981
Posted on Thursday, June 24, 2010 - 12:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

waiting for word that my IC is installed for similar issues. they did the diag workflow for the fuel pump sensor and got nothing so new IC for me
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