Stalling issue under hard braking - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 12 (permalink) Old 06-13-2011, 08:54 PM Thread Starter
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Stalling issue under hard braking

Hi, I tried a search, but came up with nothing. Here is my issue: Under hard, panic braking from higher speeds (80+), the engine shuts off and will not re-start until the key is turned off and back on. I've tried it with the clutch in and out, both brakes and just front, and all combinations I can think of. Is there some sort of sensor, like a tip over sensor, that may be malfunctioning? I've only had the bike a short time so I'm not sure of the mods/problems it may have. I do know the vacuum tank diaphragm that sits under the gauge cluster is not hooked up to anything, and I've read about the "flapper mod" but I'm not sure if that's been done. Other than that, I'm green and under my current circumstance, I don't have any tools to pull it apart and look at it. Any help?

Thanks in advance,
Nic

Oh, yeah, it's an 04 with 11k and a salvage title. but other than this issue it runs like a champ.

Edit: Ok, I did an experiment and learned that it does have a tip over sensor. Next question is will replacing the sensor fix the issue if it is indeed the problem?

Last edited by devildog2376; 06-13-2011 at 09:09 PM. Reason: more info
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post #2 of 12 (permalink) Old 06-13-2011, 11:02 PM
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Tip over sensor is a good place to start.

If it isw a salvage, make sure it is moounted in the proper location with the proper orientation...If you keep having issues, I can snap a picture of the sensor.



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post #3 of 12 (permalink) Old 06-14-2011, 01:00 PM
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Had the same issue on a used RC51 I recently purchased. The previous owner had put an aftermarket fender removal kit on, hacked the original setup, and remounted the tip over sensor in the wrong orientation. Rotated it 90 degrees, and works like a charm.

2004 RC51, 2008 Ducati Hypermotard, 1969 Honda CD175K Touring Edition, 2012 Honda CR450F
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post #4 of 12 (permalink) Old 06-14-2011, 03:11 PM Thread Starter
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Cool. Thanks. I'll look into it this afternoon.
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post #5 of 12 (permalink) Old 06-14-2011, 11:22 PM
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I am curious to see what you discovered devil.....anything yet?



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post #6 of 12 (permalink) Old 06-15-2011, 01:20 AM Thread Starter
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I looked for the sensor but I'm not sure what it looks like, nor where it is located. The bike does have an aftermarket undertail so I'm assuming that what zettaracing said is accurate to my situation. Can you snap a pic for me?
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post #7 of 12 (permalink) Old 06-15-2011, 05:35 PM
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BAS Sensor has changed locations from SP1 to SP2. Bank angle sensor is located via honda shop manual for both models and it's located under rear cowl section.
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post #8 of 12 (permalink) Old 06-15-2011, 06:14 PM
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This is where mine is located now. You can also just unplug it, but you loose automatic engine shut-off if the bike goes down.

2004 RC51, 2008 Ducati Hypermotard, 1969 Honda CD175K Touring Edition, 2012 Honda CR450F
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post #9 of 12 (permalink) Old 06-15-2011, 06:59 PM
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Take a look here...
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post #10 of 12 (permalink) Old 06-15-2011, 07:03 PM
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This is the one....sorry for the technical difficulties
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