High Idle

[Dave4.6]

Looking to see if someone can guide me,I cleaned the intake filter and MAF sensor.Now the car will idle high then drop back to normal.When I drive it I'll come to a stop in first it revs up around 2200 rpms then back to normal any help is appreciated

 

[wmburns]

Here's a resource guide to get you started:

Troubleshoot IAC idle problems 1996-2004
https://www.stangnet.com/mustang-forums/resources/troubleshoot-iac-idle-problems-1996-2004.13/

The TLDR version. Rule out a vacuum leak!

 

[Neuron]

Clean or replace your IAC(Intake Air Control) Solenoid.