| Author | Message | ||
     Pwillikers |
The actual ambient temp was 65. The instrument cluster's "AT" readout was accurate for five minutes into the ride then jumped to 105 and stuck there for the remainder of the ride. I parked it then rode it again two hours later. The actual ambient temperature was 58, the instrument cluster's "AT" readout was accurate for ten minutes then jumped to 82 and stuck there. It's now permanently 82. I checked the diagnostics for stored codes, there were none. Would one of you kind souls with the "electric diagnostic manual" please excerpt the section on trouble shooting the IAT sensor? I'd like to confirm that it is the sensor and not the instrument cluster or the ECM. Thanks. | ||
| Ratbuell |
Glad to see someone else is having this happen. My CR has been reading consistently high ATs since I got it. I haven't worried about it...but now that I think about it, does the ecm reference it as part of its running calibration? | ||
| Rockstarblast1 |
mine has always read atleast 10 degrees warmer then it is outside.... i figured it was just a useless function on the bike and dont even look at it. | ||
| Ohsoslow |
It mainly because the sensor is located right above the front header all of the engine heat is making it's way up to the sensor. My guess would be it goes even higher when you stop and then comes back down after a min of ridding? | ||
| 2thepoint |
They work great once your moving at 50 or 60mph plus. At slow speeds the reading is messed up from all the heat coming off the bike. | ||
| Carbonbigfoot |
Yup. R | ||
| Milt |
In temperate weather (70 F) gets to 105 F regularly, but only in stop and go traffic. It drops like a stone when I get going. No joke about the heat coming off the bike. Feels real nice when it's cold ! | ||
| Lemonchili_x1 |
Got the same thing with my R which had me baffled for a while thinking it was at least 10°C too high... I've worked out that the AT reading doesn't update that often (maybe every 15 seconds?), and it doesn't update when stopped. I'd guess there's a cut off speed, maybe 20mph. Try this - with the bike stone cold (ie parked overnight) turn the ignition on but don't start the engine. Even though it says CT cold you can change the display to AT. It should show close to actual air temp. If you now start the engine the AT won't change until you're moving. I checked the AT reading with a thermometer on mine and it was only about 2-3°C too high. I think you need to be doing around 50mph+ to get a reasonably real AT. | ||
| Pwillikers |
I pulled the IAT sensor out of the ram air snorkel, wiggled the wires, stared it down then smiled at it. Nothing seems amiss. I entered diagnostics and was able to raise the IAT readout 3 degrees c by breathing on the IAT. Next ride when the AT read out on the instrument cluster get's stuck, I'll do the same. If it's value is reasonable and I can change it through some means, I'll just assume the ECM is getting the correct values from the IAT and is therefore metering fuel accordingly. I'm much less concerned what the instrument cluster is displaying during normal, non-diagnostic mode. My real concern is that there is no lean fuel condition being caused by a faulty IAT sensor. (Message edited by pwillikers on November 27, 2009) | ||
| Ratbuell |
+1. I could care less what the ambient temp is as far as the display goes...I just want the computer to be seeing accurate numbers in order to meter fuel properly. Only time I worry about actual temps is at/near the freezing mark, telling me to watch for ice. And if its that cold, with the potential for ice...I'll probably be on the Uly anyway (with my super-sexy ski jacket zipper thermometer velcroed to the dash!). |
