Idle State Rpm

[gNaveendra]

When tuning an engine, what is the minimum RPM to maintain, not compromising on A/C motor???

Because i feel my vehicle burns more even during idle state of engine.

Any advices or significant points regarding this???

[Dushyantha]

Different vehicles have different idle speeds given by their manufacturer . Usually somewhere around 700-800 . And setting the rpm to the bare minimum would cause the engine to stall and shudder even when pulling off.(that is if its a manual gear )

[Rumesh88]

When tuning an engine, what is the minimum RPM to maintain, not compromising on A/C motor???

Because i feel my vehicle burns more even during idle state of engine.

Any advices or significant points regarding this???

Are you referring to a EFI engine or a carb type engine here? (I assume it is gasoline).

Edited November 10, 2014 by Rumesh88

[hrm]

You have to tell the make and model of the car and current idle speed (with and without AC).

[gNaveendra]

Chevy Spark 2011

With/without A/C nearly 1k RPM, but little above that.

Its a MPFI engine.

Any specific advice???

[Davy]

It's normal for the idle RPM to sit above 1000 or even close to 2000 when the engine is cold. It should however settle down just below 1000 (say around 800) or as per your car's manufacturer's specification.

How many Kms has the car done since the last tune up? Carbon deposits on the throttle body might cause the idle control meachanism to behave abnormaly.