Hi guys,
Long time lurker, first time poster. Hoping to get some help on my XB. Tried to get some help on badweather but got nowhere so now I'm trying here.
Okay, here's what's up. I ride my bike 120 miles per day Monday thru Friday. About a year ago, I got a random misfire while riding home. 99% of the time it only misfires/cuts once and when it does the CEL comes on for about 3-5 seconds and then it turns off and everything goes back to normal. It did this twice everyday (once coming to work and once going home) for many months and it wasn't a big deal. Then one time it did it once, then again, and again and again and again. This time it wasn't just cutting out, it was fully back firing. It did it for about 5 minutes straight (seemed like an eternity while I was trying to split lanes in rush hour LA traffic with a bike that wouldn't run right) and then it stopped and was fine again.
So, sometimes it'll just cut out and other times it'll backfire and everytime the CEL comes on and then immediately goes out. The one time it did it for 5 minutes straight I noticed that the tach would drop to zero when it misfired... hmmm a clue maybe? The other thing is that there are no stored codes. I say again... NO STORED CODES!
About 90% of the time the misfire/cute would happen in almost the exact same part of my commute (in Long Beach for those that want to know) which was 25-35 minutes into my trip. So it seems time based which is actually more likely to be a temp issue. Yes, my fan still works and always turns on when it's supposed to and no my bike doesn't seem to be running hot. The only mods are a K&N filter (stock air box) and a Special OPS muffler.
It's been doing this misfire/cut maddness for a year now. Like I said, it usually only does it once and then it's fine but today it did it like 10 times and it's always at the worst times.
Is it possible that I have a bad temp sensor and the ECU is going into "fire every other cylinder" mode? Has anyone else experienced this? Any insight? Any help would be greatly appreciated. I really depend on my XB and I need it to be safe and dependable.
TIA!
Nate