I have few question for my Toyota Altis 2005 E M/T 1) what is the normal idle ? as i notice with my engine when i started the idling speed is unstable sometimes above 2000 or 1500 RPM and it goes down gradually to 1100 and sometimes below 1000 RPM. 2) my second question is while i am running, this problem only happened often while i am in low speed specially on the traffic jam i have notice that the speed doesn't make any changes even my foot is off from the accelerator pedal and the moment that i applied the clutch the engine RPM it goes to 2000 RPM or above, what is the possible cause of his problem.

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