Something abnormal with my Saga today. It's a 1.3MT.
When I free gear, the engine will rev up and stay constantly at 2,000 RPM.
But when the ventilation fan been triggered, the RPM will drop to about 1,200 RPM.
So nowadays when I wait idly, I have to enter gear 1 and release my clutch just about right so my engine will stay at below 1,000 RPM.

Any idea?