| Author | Message | ||
     Thesmaz |
Lookin for a bit of help here. My 06 Uly is giving fits when riding at constant throttle between 3 & 4k rpms. It misses and stutters which seems to get a bit worse when its raining (which happens A LOT here in Belgium). I've had the TPS reset and static timing adjusted twice since the problem first appeared and I've also had the 10K service done. The problems started after I installed the Termignoni exhaust but they didn't start until I had a couple thousand miles with the pipe on and got caught in a down pour. I have recently acquired the VDSTS software and cable and plan on doing my own TPS reset as soon as I get a chance but wanted to ask here to see if there's anything else that I should check to try to solve the problem. TIA! | ||
| Jlnance |
Plug wires? | ||
| Skrobe |
Perhaps you are experiencing AFV (adaptive fuel value) creep. Were the ECU fuel maps modified for the new pipe or are you running the race ECM? You could try using VDSTS or ECMSPY to reset the AFV to 100 per cent and then do a closed loop ride for the ECU to adjust the AFV. | ||
| Thesmaz |
Plug wires seem OK but I need to check them at the coil end. The map wasn't modified for the pipe and I'm running the stock ECM. It shouldn't be needed because the Termi has it's own interactive exhaust valve. I'm going to reset the TPS/Idle myself this weekend and then find a road that I can run at the required 5th gear 3.5 - 4k rpm range for a couple of minutes and see how she does. I'm also going to have a look at the bundle of cables that enter the frame just below/behind the triples to see if I can spot any "shiners". Any other recommendations would be greatly appreciated! | ||
| Teeps |
The misfire is worse or more frequent when it's raining? I suggest replacing the plug wires. | ||
| Adrian_8 |
The front plug wire rubs on the bottom side on the idle adj. cable which very hard to see unless you take the wire off, and be sure the wire is "snapped" on. | ||
| Stevenknapp |
FWIW, mine does the same when it's raining, but is OK otherwise. I've got new plug wires, and that didn't seem to help. I'm interested to see what happens with yours. | ||
| Davo |
Thesmaz, Have you experienced any pinging? The 2900-3200 rpm cruise at 9-12 TPS at operating temperature is a parameter that adds about ten degrees to your advance numbers. If you are not pinging then I would leave it alone and maybe ride for 5 minutes in fifth gear at 50 mph and keep the throttle still. If you are pinging then take out a few degrees and the 3K hesitation will greatly reduce. I have run numerous logs on the 06 ECM on the street and at the 3K cruise the ignition is on the edge. That is why your engine is clean without a CAT and your MPG is good as well. | ||
| Stevenknapp |
Davo, any thoughts on the rain connection? I was thinking "Water in some electrical thing" until I saw your post... | ||
| Dick8008 |
My lightning does the same thing. It seems to happen with it's raining or cold out. Almost like there's water in the fuel or something like that. I've noticed when I let it warm up a few minutes prior to me riding it it seems to help a bit. Not really sure what's causing it. It's been happening ever since I've had it. | ||
| Davo |
Stevenknapp, Check for trapped water in the two connections behind the tranny output sprocket cover on the right side. The weather proof connections have a way of holding water that finds its way down the wires. Put silicone dielectric in all the connectors. Also, check the coil for trace arc trails. Put silicone on the inside of the spark plug wire boots while you are in there. My original coil had trace arc trails which indicate a problem with tiny cracks or moister on the wires and coil. As you know, the coil is in a very hot area, that same area is prone to getting wet through the left side scoop when riding in the rain. The 3K surge is not related. (Message edited by davo on August 20, 2007) | ||
| Bertotti |
Whats a CAT and I don't mean the furry one? Am I to understand that riding at a certain rpm for a certain amount of time will change the timing? Kind of lost me on the last two posts Davo. Thanks | ||
| Davo |
Bertotti, I used the term CAT as an abbreviation for catalytic converter. Buell makes the EPA requirements without a CAT. I should have been more clear. IF you travel in fifth gear at 2500 rpm at 50 mph for about 3-5 minutes with the engine at operating temperature. During this time try to hold the throttle as still as possible. This will allow your AFV (adaptive fuel value) to reset. This is a variable that is used when the motorcycle is operated in open loop (not learning from O2 sensor). This open loop occurs during idle, low rpm, high rpm operation and heavy acceleration (wide open throttle). The AFV does not effect the timing and is used as a variable to change fueling. The timing is changing constantly based on engine rpm, engine temperature and throttle position. The timing map is set in the ECM. You can change the initial timing setting by moving the CPS (camshaft position sensor) which will effect the entire timing curve. It has always been my opinion that the timing can be too radical (advanced) for engines with higher than expected compression and/or with the use of ethanol containing fuel. | ||
| Florida_lime |
CATalytic converter  | ||
| Bertotti |
Well now you can see just exactly how long it has been since I had a new bike. I didn't know some bikes even had a cat. None of mine ever did. Doh! Thanks | ||
| Thunderbox |
I have the same problem with my Uly in the rain. I am sure it is a secondary wiring problem but I am not sure if its wire or coil related. | ||
| Joojoo |
Mine does it too....Goes away when the rain stops or slows down. I was caught in the rains this weekend... Jack | ||
| Horridus |
+1 with the rain. Horr | ||
| Thesmaz |
I reset the TPS and idle today. Idle was too low to begin with. I also moved the spark plug cables away from th frame; they were smashed up against it on the underside of the other cable bundle. I didn't get to mess with inspecting the coil and cable connections there, yet, but I will soon. On my way home I'm going to toddle along at a steady 50mph to get the ECM into learn mode for a few minutes before I really whack it. I'll be sure to post my impressions after a few days riding. | ||
| Electraglider_1997 |
Another thing to check is the air temp sensor located under your air box cover. The service manual clearly states that the crankcase breather hoses (2 of them) located on either side of the sensor should not output above the temp sensor because it is very hot oily misty air. You don't want that affecting the temp sensor readings. Both of them were installed incorrectly (way high) by the factory on mine. Fix is simple: push the tube ends down in the plastic plate to their proper height which is below the temp sensor. Whether or not this can cause the conditions you are having I really can't say but it surely is something that every owner should eventually check and retify if needed. | ||
| 911_racer |
I had the same problem when i got caught in the rain storm about 1,500 miles from home. major misfiring problem. I have had problems with the plug wires in the past so that was the 1st thing i checked when i pulled over. the plug wires were on tight and looked good. (they are new). i checked the ECU and had no codes. so i was thinking maybe a problem with the coil. so i pulled the air box etc and the plug wires then removed the coil. there was a ton of nasty rusty corosion inside the front plug/wire connection. i cleaned it out the best i could and put some brake caliper grease in it and the bike ran perfect. problem solved  . and this is the only problem i have ever had with this bike. i have logged over 20,000 miles and never even done a TPS reset! -ever- | ||
| Thesmaz |
This past weekend I had the bike apart to install the polly grip heater, handle bar risers and Stebel horn so I had a chance to look at everything. The breather hoses were at the right height, I gently cleaned the temp senor, plug wires were snug and showed no signs of wear but there was a bunch of gook and grim around the connector to the coil pack. I cleaned it the best I could but wished I had some dielectric grease that I could have applied to the connector. I'll have to source some and do that soon. I also reset the TPS and idle while I was at it. TPS was ok but the idle was too low. The bike seems to be running OK now but I'll be curious to see what happens next time I get wet. I have a feeling that there may be a problem under the ignition switch housing because I didn't spot anything else that may be causing the wet weather problem. I'll post again once I have new info. By the way the polly heaters ROCK! as does the Stebel horn and the bar risers I got from Dan Sergison. They raise the bar just enough for me to be a bit more comfy without feeling like I'm riding with ape hangers. | ||
| Dfishman |
I had the same stumble appear out of nowhere last week in the middle of a 2 week trip 850 miles from home.After checking connections & such I realized it was idling low around 950 rpm.I set the idle up to 1050-1100 & it cured it,It will stumble every once and awhile but for the most part it runs fine. Other then that problem the bike ran great for 11 days averaging 309 miles a day. | ||
| Johnnylunchbox |
Last month while riding in WV during a frog-strangler storm, the bike was misfiring pretty steadily. The next day I had the TPS reset and idle upped a little, and the bike ran better, but I still get a little stumble when the bike is not totally up to operating temperature. I have not been in any downpours since then. | ||
| Rekrab |
Just returned from Lake Placid, and heavy rain. 08 Uly missed, surged, stumbled etc. When it dried out back to sweet. | ||
| Heyfred |
Here is what I did on my XB12R and it may help you. http://www.badweatherbikers.com/buell/messages/384 2/297661.html?1188856246 | ||
| Turbooster |
Heyfred, Obviously I like the results you got. Do you think the same would work on a 2006 Uly? Where exactly is the TPS on the 2006 Uly? Mine is stock, and I intend to keep it that way, but it pops upon cracking the throttle, and it sporadically misfires when cruising. |
