ECM mixture problem with altitude change

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HaulinAshe

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Joined
Mar 10, 2006
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Location
Dallas, NC
2007 with PC-III and mostly stock map with AP addition.

It was soooo freakin' beautiful on the south leg of the BRP from Asheville today, that I had to ride the posted limit. Lock the throttle in 4th gear and for that very long and consistent uphill grade, through all the tunnels etc., the FJR just pulled consistently. As the elevations began to change I unlocked the throttle to make minor corrections, the throttle would not respond and then suddenly jerked alive.

I checked the GPS and had made a 2,500 feet climb and experienced a 10F temp change. I fiddled with the throttle a while with no improvement. Finally, I dropped two gears and twisted her up for a bit. ECM settled down and throttle response came back to normal in 4th gear.

Had one more opportunity to test the same scenario with same results. Confirms for me that the ECM stops learning conditions when the TPS remains fixed for long periods.

 
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