EcoBoost elevated idle.

[Black]

2016 with 48k.
Initial startup in the morning it will idle about 1,300 rpm. It has been 70+ degrees in the garage.
Once warmed up idle is around 700 rpm and will frequently kick up to about 900 rpm if in park.

Prior to this initial start up even in cold weather was closer to 700 rpm and after warm up was nestled in nicely right about 500 rpm.

Any thoughts?

 

[99WhiteC5Coupe]

I have a 2015 Expedtion Limited 4x4.

Clean the inside of the throttle body with spray throttle body cleaner.

 

[JExpedition07]

I’d argue 500 is pretty low. Mine is usually around 700 RPM idled down. How long does it stay elevated around 1300? Mine will start at 1200 initially on a cold day then settle after 15-20 seconds of running.

 

[gixer2000]

Is your Ac on? Pretty sure I see an idle increase while my ac is on

 

[Adieu]

CBU?

And does it read 500 on obd scanner, or just look like it?