| Author | Message | ||
     Samruai_sam07 |
Good afternoon all! I have been chasing this intermittent problem for over a year! :@ So I had a bad spill back in June. Finally got all the parts to fix it, and get it all together, get it running, and everything is fine for two days of riding in "cooler" temps (approx. 85*F) even had a passenger on with no problems. Got on the bike yesterday afternoon it is warmer (approx. 90*F) and as soon as the engine gets up to operating temp I start to have this intermittent problem that I had a year ago (after my first spill see below). So here is the reoccurring problem: When warmed up, on a warm day, the bike will idle like a champ. At first when moving down the road it will cut out when throttle is applied to accelerate, usually it will pull off from a stop without a problem, but once you start to try and get above 45 mph if you try and get on it a bit, you lose all power and if you don't let off the throttle (at first) it will die. After it progresses it will just die no matter what, sometimes it may start right back up sometimes you have to let the fan do it's thing and get it cooled off and then it will start right back up. Last year after the first little spill I had (see below) once I got it all up and running and everything worked fine for a couple of days then it did this same thing. I troubleshot it and replaced the Spark plugs and wires, swapped the coil out, reset the TPS, O2 Sensor, which didn't fix it, then I replaced the Engine Temp Sensor, with the new O2 Sensor left in and it worked like a charm until my spill this June, now granted it worked fine for about 100 miles of easy riding top speed of 70-75 mph. So... We went through the manual for the TPS (throttle position sensor) with its troubleshooting tree and it instructs you to: take voltage readings with the B.O.B. (we just used the computer) and if you get less than 5 V +/- 0.25 V than go on to page number two. Where it has you unplug the TPS and read the 5 V which it was approx. 4.5 (now my multimeter could be a bit off it normally reads high) after this, it has you unplug the ECM and check resistance, which I hope maybe someone else with a 2003 XB9S can double check for me, first you check resistance of 5V (R/W) and GND (BK/W) of the Bank Angle Sensor (BAS) and CAM position sensor (with the TPS still unplugged) then you unplug one by one, and check resistance when all three are unplugged you should get more than 1 MOhm and we were getting 12.5 KOhm. Well look at the wiring diagram the speed sensor and the intake temp sensor are on the same circuit, so we unplugged the speed sensor and BAM! Overload, which is greater than 1 MOhm. So we thought maybe the manual is wrong because there are two other sensors that are on those lines and maybe 12.5 KOhm is proper, and from the problem we were having that it is the TPS So.... This year we have swapped the Inlet Temp Sensor and BAS, replaced the TPS with one (don't buy from HD a 1993 Mustang TPS is identical and for 1/3 the price Thanks to buellxb.com user Xb9sDre) reset it with ECMspy, no codes of course before any of this and no codes except for the sensors we unplugged. Still the same problem. Well based on our findings last night we unplugged the Speed Sensor, and it runs like a dream... so until further notice it may be fixed! So some back story. The bike has been through some traumatic scenes. June 2012 40 mph left handed low-side. New primary cover, shifter linkage assembly, clutch lever and mirror good to go. June 2013 (I swear June is a cursed time) 70-75 mph, left handed low/high(?) side wreck. This is the crash I'm finally healing from and got the bike back together from and now I have my problem. So anything else you may wonder please ask! (Message edited by samruai_sam07 on September 16, 2013) | ||
| Samruai_sam07 |
Well after my last post I plugged the speed sensor back in and no problems. Today it is warm again and it took the same distance as the initial occurrence (this year) and it started to act up unplugged the speed sensor and still crappy. Going through the wires... | ||
| Samruai_sam07 |
Went through the wires unplugged everything in the top engine compartment sprayed electrical cleaner in all the connectors, found a bare wire under the fuse box. Taped up the bare wire put everything back together, and so far it is running great in the warm weather, we'll see how long it lasts? | ||
| Reepicheep |
Was the bare wire disconnected? If so, it is probably worth figuring out where it was supposed to be. If it was still connected but the insulation was just worn through somewhere, then you are good to go, just seal it up. A cable tie will keep electrical tape from unsticking and unwinding over time. | ||
| Samruai_sam07 |
No the bare wire was just rubbed through the insulation, it didn't seem as though there could be any place for it to short out on, and it is a heavier gauge wire, looking like it goes to a relay. Good idea on the cable tie, I never thought about that. I rode it to work again today and it was really cold here in Arkansas this morning, still is a bit chilly for September, but I'm about to call it a day and hopefully it won't have anymore problems, I'm thinking about a 50+ mile ride today, the weather is gorgeous down here so I got to take advantage of it!  |
