| Author |
Message |
    
Caryder
| | Posted on Monday, September 14, 2009 - 10:00 pm: | 
|
I probably posted this question in the wrong place originally in the DYI section.
I have a 2006 XB12X and I noticed a quirk when starting a cold engine and not immediately riding away. The engine struggles at idle about a minute into the warm up. I live in Phoenix, ambient temp was about 90 F for reference at the time I was collecting the data.
Monitoring the data from the ECM, it seems the closed loop function enables when the fuel enrichment is still dropping through 102.5%. It could be coincidental about the fuel enrich value when the ECM triggers closed loop, its just what I noticed, and the engine temp didn't seem to be a factor which I thought was weird. Regardless, if the engine is not fully warmed and it drops into closed loop mode the engine stutters and drops an average of about 100 RPM as EGO Correction tries to lean out the mixture. It’s not a big deal, but I would like to change the behavior.
Although I could disable the Idle Closed Loop function altogether and be perfectly happy with the idle, the engine runs fine when it is fully warmed so I would prefer to fix the issue as opposed to disabling closed loop idle across the board.
& 75C engine temp I imagine the O2 sensor hasn’t even warmed up properly in order to provide good input to the control system.
With the engine fully warmed, the average EGO correction is spot on 100%.
My question is what are the triggers for Idle Closed Loop when a cold bike is started and warming up and is there a map setting to adjust them outside of digging into the hex code? |
Bombardier
| | Posted on Friday, September 18, 2009 - 06:30 pm: |
|
I installed a four wire heated narrow band O2 sensor as it starts to send info from start up instead of waiting for the sensor to heat up enough to work.
The standard setup is more prone to fouling both plug and sensor as the mixture stays richer longer which in turn makes the sensor dormant for a longer period.
The instal is very easy and only requires that a power source and a earth conection be made. The earth connections can be made at the battery ( 2 wires ), the power conection can be made at the tail light wire as it runs to the rear brake light switch near the pedal ( the wire is in the same area as the battery, 1 wire ), and the sensor wire connects as normal.
This sensor has the same parameters as the standard one and alleviates the cold weather fouling that occurs on occaisions.
Hope this helps. |
|
Troubleshooting (Poor Starting/Running/Handling/Ride Issues) »
Archive through December 21, 2009 »
Tuning question