This issue is called idle under shooting. Basically, the engine runs to a low RPMs that it can't keep it running and it just stalls out.
There are many reasons for it but we should start with the basics before we get into the complicated items.
First, we need to check the fuel pressure when this happens.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
You should have around 60 PSI of pressure all the time.
The next thing is to pull the spark plugs and see what they look like. If they were recently replaced, then what brand of spark plug did you use as we have seen weak spark from some plugs that will cause this.
Get a picture of the plugs and that will help.
Let's start with this and go from there.
Thanks
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Thursday, May 19th, 2022 AT 5:29 PM