need help. I picked up this 2009 AE with less than 5000 miles. Guess the previous owner could not get used to the electronic shift. I did a quick test ride. Seemed okay. But guess it was not a long enough ride. No matter warmed up or not surging idle varying by at least 50 rpm. I DID THROTTLE BODY SYNC,no improvement with the surging, except now it's at correct 1000 vs. 900 before when warmed up. Also checked air filter for critters...none. But surging is a constant when at idle no matter air temperature or time running. It does pull smoothly once past 1500rpm.... And sometimes if I am too quick with the throttle in Neutral testing, it dies ! With the lack of miles,.could this just be and injector issue? I have been running Techron and Ring Free(yamaha) for just a short time. If not injectors, I am leaning towards a vacuum leak...but with such low miles on a garaged bike I am thinking not. Any ideas ?
I agree with Maximrebel here, idle should be set to 1100~1200 RPM for most FJRs. Your owners' manual should have the right RPM numbers for the AE at idle.
How old is the gasoline in the tank? If you are trying to save a few pennies by running old rotten gas through expensive fuel injectors, you might get much
worse results very shortly. If the gasoline in the tank is old, then siphon and dump
the old gas first thing (do NOT add fresh gas to old gas; that will not
help). Seafoam in the gas tank may be some part of the answer you need, too. Give the Seafoam a few tanks of gas to do its' magic. Seafoam is real magic, but it is not instant magic.
Until you get things right, I recommend running real gasoline (not ethanol-gas) in the FJR. Get good gasoline here:
have a problem from the Throttle Position Sensor. The bike's diagnostics can test the TPS on the bike, no disassembly needed. The TPS usually goes bad (or flakey) at the low throttle end. The numbers (when testing) should roll up smoothly, no jumps.