Started up a new 2015 5.0 V8 in F150 XLT.
Initial idle speed in park was ~1200 rpm
After about 1 minute the idle dropped to 1000 rpm.
After about ten minutes the idle was still 1000 rpm
& actually varied between 1000 & 1050 rpm.

Is this typical for the 5.0 or is it because of CA emissions?
Is the high idle speed behavior typical for other states?

 

It will idle high while its warming up. Did you try putting it in gear? What is it idling at after you drive it for awhile?

 

Let it idle for ten minutes in "Park" in dealer lot.
Idle speed still @ 1000 rpm after ten minutes, engine should be warmed up after ten minutes., since ambient temperature was 70F in So Cal.

Tried the same test on two major competitor V8 & V6, PU's.

Chevy 5.3L V8 & 4.3L V6 starts up @ 1200 rpm and quickly turns down to 750 rpm within 20 seconds fro cold start.
Ram 5.7L V8 hemi starts up @ 1300 rpm and quickly turns down to 750 rpm in about 20 seconds much faster than the Ram, 3.6 V6, which takes about 90 seconds to reach even 900 rpm from 1350 rpm intial start up ,but stablizes at 750 rpm.

All idle tests were performed at ~ 70F ambient and in "park".

The 5.0 Coyote in the F150 must have a performance cam that requires a faster idle. The four independent OH camshafts each have a separate VVT phaser mechanism to obtain a smooth idle.

 

I wouldn't worry about idle rpm in park. Lots of engines will run a bit faster in park to help with cooling and put out a bit more alternator current.

Idle speed in gear, and after driving would be a better test. I bet it would fall down some if driven.

 

Was concerned with shifting from "Park" to "R" or "D" at 1000 rpm, seems a bit high.

 

No reason to worry

 

The new F150, 2.7L EB idles at ~ 650-700 rpm after about 1 minute warm up.
This idle speed is more reasonable.

Some research indicates the new SFI FI , 5.0L, V8 was introduced to the F150 in 2011.

Was looking for some real experience from owners of the F150, 5.0L ,V8 from 2011 to 2014 for the steady state idle speed in "ParK" mode.

Is the 1000 rpm idle speed typical for these years, also?

 

Post your question in the F-150 forum, you will get a lot more information.

 

when at operating temp, 550 in gear and 650 in park.