Constant high idle

Hi,

First, I attached the vacuum schematics below for your review. Take a look through them and let me know if they help. Also, note that the HVAC system uses an engine vacuum to control the mode doors and other air flow components. (Pic 3)

Here is a link that explains how to locate and repair an engine vacuum leak. You may find it helpful.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Also, I feel as though I have seen this vehicle before. Did you ask a similar question in the past? If this is the same vehicle, did you check the throttle cable by disconnecting it from the TB?

Let me know.

Take care,

Joe

See pics below.