Last week I had the bike over 6500 feet, and encountered some dramatic drivability problems.
The symptoms started around 6500 feet, and continued as long as I was above that elevation. Flat off of throttle, bucking, jerking, almost impossible to ride in traffic. Hard to start, and most noticeably, idle speed at 900 rpm, normally at 1100 rpm. I thought it might be the crappy Los Angeles gas, but a fill with local stuff made no difference. As soon as I dropped in altitude all symptoms cleared, and the expected drivability returned.
I've had the bike over 14,000 ft with no problems. The ECM tech bulletin has been completed, with no problem to date. The ONLY thing that has changed since my last venture to altitude in 2008 was the removal of the PAIR system. This might just be coincidental, but should be considered.
So - what do you think? ECM problem? Air pressure sensor? Dirty air filter?
TIA -
KD-
The symptoms started around 6500 feet, and continued as long as I was above that elevation. Flat off of throttle, bucking, jerking, almost impossible to ride in traffic. Hard to start, and most noticeably, idle speed at 900 rpm, normally at 1100 rpm. I thought it might be the crappy Los Angeles gas, but a fill with local stuff made no difference. As soon as I dropped in altitude all symptoms cleared, and the expected drivability returned.
I've had the bike over 14,000 ft with no problems. The ECM tech bulletin has been completed, with no problem to date. The ONLY thing that has changed since my last venture to altitude in 2008 was the removal of the PAIR system. This might just be coincidental, but should be considered.
So - what do you think? ECM problem? Air pressure sensor? Dirty air filter?
TIA -
KD-