Hello,
This could be due to a dirty idle air control valve (IAC).
A dirty IAC will not have sufficient air flow through it while the engine is off throttle and that can cause the engine to bog down or even stall when at idle.
Cleaning out the IAC can improve the drivability.
Here is a helpful guide:
https://www.2carpros.com/articles/idle-air-control-valve-service
I have attached diagrams below for your reference.
Let me know of any questions.
Thank you.
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Friday, July 22nd, 2022 AT 2:16 PM