Bike is a 2012 bmw R1200RT, 75,000km. Owned by me since 3000km.
The problem: starts right up, but revs up and bounces off rev limiter and stays there until I hit the kill switch. This just started after I had the plastics off and was monkeying around installing a new horn. Replaced an older Stebel horn, didn't change any wiring, it runs through a relay. New horn works fine. Cruise is switched off. GS911 scan no faults. The throttle opens and closes normally, but has no impact on the revs.
The suspects: throttle cable, air leak at throttle body, electrical/ECU?
I have removed the plastics again, removed the tank, examined the throttle cable run, opened Bowden box to confirm correct cable run in box.
The horn went onto the OEM mount. I was in the neighbourhood of the throttle cables, but did not intentionally move, relocate or otherwise molest the cables. Are the cables sensitive to being shoved around even a little? I feel it must be a simple thing that my ham handedness has buggered up somehow, but haven't discovered it yet. Is there a way to determine proper throttle cable tension? I'm prepared to be humbled.
The problem: starts right up, but revs up and bounces off rev limiter and stays there until I hit the kill switch. This just started after I had the plastics off and was monkeying around installing a new horn. Replaced an older Stebel horn, didn't change any wiring, it runs through a relay. New horn works fine. Cruise is switched off. GS911 scan no faults. The throttle opens and closes normally, but has no impact on the revs.
The suspects: throttle cable, air leak at throttle body, electrical/ECU?
I have removed the plastics again, removed the tank, examined the throttle cable run, opened Bowden box to confirm correct cable run in box.
The horn went onto the OEM mount. I was in the neighbourhood of the throttle cables, but did not intentionally move, relocate or otherwise molest the cables. Are the cables sensitive to being shoved around even a little? I feel it must be a simple thing that my ham handedness has buggered up somehow, but haven't discovered it yet. Is there a way to determine proper throttle cable tension? I'm prepared to be humbled.