| Author |
Message |
    
Snojet
| | Posted on Tuesday, January 26, 2010 - 03:15 am: | 
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Okay Badwebbers I need your help. Sorry for the long read....
I reported this same problem months ago. What the bike is doing is; at normal operating temperature the engine will stumble/bog down at moderate to heavy throttle movement or above approx 3,300 rpm. Since I commute 60 miles round trip, mostly on the highway this is a problem. When the bike is first starting (about 1 mile to 10 miles) out it runs real good (normal). But as the commute continues the problem occurs.
This is what I had months ago and after several attempts to fix (will explain later) I still have the problem. Also, before the last set of replacement of different parts the bike would trip the red light and really run badly.
Now listen up, this really puts a twist in the problem. After about 20 miles on the highway I pull off on the "off-ramp" to my exit. At the stop light I am able to turn off the bike and let the cooling fan perform it's duties. Or sometimes, I've pulled off to the side of the road and turn off the bike and let the cooling fan perform it's job and start out again. In the past warmer weather the fan would run normally, now in the winter the fan hardly comes on. I would then start the bike up again and go up the main thorough-fair (or back on the highway), speed limit is 50mph or 55mph. I can get upto 60mph upto 75mph and maintain. After this "reset" the bike will run normally. Then after a couple of miles it's back to running with that nasty stumble/ bog.
Bike has a little over 12,000 miles on it. No mods at all. Run 91 or better octane gas. 2006 XB12X.
FYI - for what it might be worth...
Way-way before this problem occurred I did mess around with the fuel maps. I was trying to get that "Square Idle" thing dialed in. I didn't have much luck, I put the maps like I found them. I did to a "burn/flash" approx 6 times. Bike ran great for month after this trial/event.
Okay, here is what I've done....
With ECMspy I found some code(s) directing me to the O2 sensor. No other codes listed. Cleared codes.
Replaced both spark plugs and wires. Plugs indicated they were running lean. (It was time for a normal tune-up) The coil did ohm out ok, it was on the high side of the book limits.
Replaced the O2 sensor.
Checked wiring at/around ECM - found no defects.
Reset the TPS and AFV.
After this work the bike still has the problem.
Next...
ECMspy now shows O2 sensor again. No other codes listed. Cleared codes.
Checked timing for grins. It's fine.
Replaced air cleaner. - Just because (part of tune up).
Replaced Air Intake Sensor. It's the sensor in the airbox that is located between the two head breather hoses. Yes, hoses are at the correct height. (At work and I can't remember the exact terminology)
Replaced Head Temp Sensor. (The wait time for this part really is unacceptable!!!!!!) That's another story.
Reset the AFV.
Checked the port that is located just off of the the throttle body. It is plugged, as it should be.
Results...
At first test ride, (about 20 miles) I thought I fixed the problem, bike ran great.
No codes in ECMspy.
Then....
Back at commuting to work and home the problem has returned, but it is not as pronounced. And if I stop and perform the "reset" the bike runs great for the short time and then the problem returned. No codes in ECMspy.
I thought I might have a bad fuel pump. But I can't believe that because I can "reset" the bike and it run good for that short time.
I don't think it is an intake seal problem. Again because of that "reset" thing.
I am thinking that my ECM has a problem. That seem feasible with the "reset" thing.
Alright Badwebbers, what do you think??
Also, posted this on the "Big, Bad and Dirty".
Thanks for any input/help!
Regards,
..snojet.. |
Buellisticx1
| | Posted on Tuesday, January 26, 2010 - 05:07 am: |
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Ok let's try something.
Two thoughts:
1.- Have you ever gotten your AFV read when the issue happens?....
Any fluctuation in AFV tells you whether you are running rich or lean. Bad seals, exhaust leak, cracked header, etc., all will show up as low AFV (<100) pointing to a lean mixture.
2.- Have you checked your TPS?.....looks if it's jumping all over like mad after a TPS reset and a ride in closed Loop Learning mode. (same values remained after a TPS reset).
This may not be your problem but it’s an idea....
Those type of problems are often the most difficult to find..
Good Luck. |
Blake
| | Posted on Tuesday, January 26, 2010 - 10:21 am: |
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Sounds pretty obvious that you have a problem in the O2 sensor circuit. You've changed the sensor itself with no improvement, so next is to look for issues in the electrical wiring of the O2 sensor. |
Snojet
| | Posted on Tuesday, January 26, 2010 - 11:29 pm: |
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Buellisticx1 -
I've never read the AFV when the problem occurred. But shortly after riding it (after Stumbling), I've checked with ECMspy and the AFV still reads were it was before the ride.
I've done multiple TPS resets with no results. The bike idles great on actually doesn't have the stumble/rough running when starting out in 1st gear.
Anyway, thanks for your input.
Blake -
I've checked the O2 wiring that is readily accessible and it is in good shape.
Thanks for your input.
I've had others mention that I might have some intake seals that are leaking. I might replace them, as much as I really don't want to! |
Buellisticx1
| | Posted on Wednesday, January 27, 2010 - 06:03 am: |
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Stumbling is a richer condition,
A fuel pressure test wouldn't hurt either. Fuel pressure will give you some hints.
Regards. |
Stillonit
| | Posted on Monday, April 19, 2010 - 03:05 pm: |
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This is the problem with my 2010 xb12x. as I have read at least 5 to 6 other post around here . Little different wording but the same Problem.and in my mind it is the ecm setup. My plugs also looked super lean. not overheated. |
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Stumbling when at temperature