I recently had my ECM changed and do not know if it did it before or not, but now if I hold the RPMs at a steady 1400, or close to that, the engine will alternate between 1400 and about 800 RPMs. It does not do it at a higher RPM. I did disconnect the battery for about 1/2 hour, hooked it back up and restarted the bike without touching the throttle to reprogram the ECM, but it did not help. It seems I remember reading something on the old board about this. Any one know if this is normal, or if not, what might be the cause?
Surging at about 1400 rpm?
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Has anyone with surging problems tried Fuel Injector Cleaner in their Wing?
No..I haven't. It only does the surging in the one RPM range. More or less RPMs and it does not do it. I have never noticed it doing it on the road, but as soon as this snow is over and the roads clear enough that I can run a tank thru it I will give it a try and see what happens.
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5,305 Posts
My 2004 Goldwing does this.
I will also mention that we own a 2001 Ford F-150 super crew 4 door truck with a 5.4 engine that we bought new. You cannot get a stable engine rpm with the truck stopped, in park when you throttle the engine up off an idle.
When you 'slightly' touch the gas pedal the IAC ( idle air control) opens up and the engine revs up waaaay more than needed if you barely touch the gas pedal. The IAC controls idle & low speed RPM, it avoids engine stalling, increases RPM if the A/C is on ...........etc
Lets say you want to rev the engine to a stable 1200 rpm in the Ford in park.... I cannnot do it with our truck
Ford tells me( a 30+ yr auto mechanic) " it is normal"
Our 2000 Silverado chevy truck with a 5.3 engine easily does any RPM you wish while at a stop in park......
It is all about the ECM programing. IF I could redo the Ford's program I would.
I will also mention that we own a 2001 Ford F-150 super crew 4 door truck with a 5.4 engine that we bought new. You cannot get a stable engine rpm with the truck stopped, in park when you throttle the engine up off an idle.
When you 'slightly' touch the gas pedal the IAC ( idle air control) opens up and the engine revs up waaaay more than needed if you barely touch the gas pedal. The IAC controls idle & low speed RPM, it avoids engine stalling, increases RPM if the A/C is on ...........etc
Lets say you want to rev the engine to a stable 1200 rpm in the Ford in park.... I cannnot do it with our truck
Ford tells me( a 30+ yr auto mechanic) " it is normal"
Our 2000 Silverado chevy truck with a 5.3 engine easily does any RPM you wish while at a stop in park......
It is all about the ECM programing. IF I could redo the Ford's program I would.
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