Engine idle

[Excellent09]

Yesterday i took my car(M35x) to infiniti for an oil change, later in the day i notice my engine seem to be idling a bit higher then usually,its still under the "1", I can tell its not idling as smooth as before, Any ideas why it doing that?

[palincal]

Did you wait for the engine to reach its normal operating temperature? If not, it will idle at higher RPM, sometimes as high as 1500. The RPM comes down in steps as the engine heats up.

[M4T5]

I'm pretty sure he understands the concept of warming up to temp...unless this is his first vehicle......

Check your air filter, if it is clean then you might just have to bring it in for service.

J

[Excellent09]

Thanks M4T5 for clarifiying i understand the concept of warming up to temp, My last visit i had the air filter changed(three months ago) so i guess i'll take it back in tomorrow to get it looked at