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Rapid fluctuating rpms??

M

more snow

Active member
Jan 8, 2008
250
36
28
Nampa, ID
My son has a 2004 600 RMK. I recently noticed on one of our rides (while I was riding it) that under partial to full throttle that I could slightly hear the the RPM's fluctuate very rapidly (maybe only 100 RPM variation). The key point hear is RAPID variation.

Is this a symtom of the engine going into LIMP mode? Anybody else ever experience this symtom? If so, what was the cause?

Thanks so much for any suggestions.
 
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