Hi,
A high idle and then stalling can be caused by a few things. Things such as a vacuum leak, fuel pressure, and so on, can cause it.
Let me know if the vehicle starts right back up after stalling. Also, are there any strange sounds, smells, smoke, or anything you can think of that may help diagnose it?
Here is a link that shows how to check for vacuum leaks. Start with this and let me know what you find.
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Let me know.
Take care,
Joe
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Tuesday, July 20th, 2021 AT 9:15 PM