High engine idle

Hello,

The high idle could be due to a faulty idle air control valve (IAC). Over time the IAC will collect dirt and debris and cause erratic idle.
Sometimes cleaning out the IAC can improve the idle quality.
The idle can also be impacted by vacuum leak.

Take a look at this guide:

https://www.2carpros.com/articles/engine-idles-too-high

I have attached the IAC removal process below for your reference.

Let me know what you find or if you have any questions.

Thank you.