| Author | Message | ||
     Reducati |
in the last 500 miles, check engine light came on for no more than 2- to-4 seconds, while riding..this has happened 3 times in the last couple of weeks....i did a check, and it s code 15, the air intake temp sensor....my question is is this something i need to be concerned about? is it gonna strand me somewhere? i actually had the air intake sensor replaced about 3 months ago, but at that time the engine light stayed on. thanks, dan | ||
| Glitch |
is this something i need to be concerned about? It would concern me. is it gonna strand me somewhere? Quite possibly had the air intake sensor replaced about 3 months ago Take off your air box and check the connection. The DDFI needs the information to keep the bike running smoothly. It may not make a big difference now, but when the air temp changes your bike will most probably run poorly. Of course I retain the right to be totally off base. I will on short order be corrected if I'm wrong. | ||
| Reducati |
Glitch, do you have a pic of what the sensor looks like? is it right under the air box? thanks in advance. dan | ||
| Skully |
When you remove the four screws that hold the air box cover on, then "pop" the tabs that hold the air box lid on, you will see an odd little device at the rear of the air box. It protrudes into the airbox from underneath. The electrical connection is there also. Keith | ||
| Glitch |
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| Roadrage |
Sorry Glitch, but I have to disagree. I do not believe the air intake temp sensor could possibly strand you at all (but I'm no infallible either, I could be wrong). A fuel injection system calculates required fuel from the mass of air measured into the engine at an assumed standard temperature. The temp sensor then adds a correction factor to compensate for density changes as a result of the temperature being different from standard. Should the temp sensor fail, the system will revert to using standard values. System might run a bit lean or rich if temp is unusually hot or cold, but it should still run. Still needs to be fixed though. I would disconnect the temp sensor, clean connection, reconnect and continue riding for troubleshooting. | ||
| Reducati |
thanks, road, i will try cleaning it. | ||
| Exitlandrew |
I had the same code, turned out to just be dirty. Some oil in the airbox, fairly common problem. Clean the sensor and invest in a catch can. I still dont have the catch can, but its next on my list. Since I cleaned the sensor Ive had no problems, and my milage went up a bit. | ||
| Ikeman |
Roadrage, I agree and disagree: Agree that a bad temp sensor probably won't strand you but the bike may not run optimally. Disagree on measuring the incoming air since the Buell FI system doesn't have a mass airflow sensor. That was one of my comments on a thread awhile back about intake/exhaust mods resulting in lean running, poor idling, etc. I've had turbocharged cars that were plug and play as far as intake, turbine and exhaust mods (up to a point when either the fuel pump or injectors couldn't keep up). The biggest difference in the FI systems on those cars and my Uly - mass airflow sensor. Just my 2 pennies... | ||
| Roadrage |
Ikeman, No, we agree completely. My statement was generic to fuel injection systems in general. They all measure air somehow, the Buell does it in a rather round about way, assuming a mass of air given throttle position and RPM. Hence we have to modify our ECM's when that airflow changes (air cleaner and pipe mods). Perhaps should have said estimates air mass instead of measures. A mass airflow sensor would be a great addition on bikes, suspect it's their size that keeps them away. | ||
| Ikeman |
Roadrage, Cool, just read your post a little too literally. I would think cost is probably a factor, too. Size-wise I would think the massive airbox on the Buells would allow even an automotive type MAF. But what do I know, I'm no engineer... |
