Recently it started to stall mainly on idle?

Hello!

I have been doing a lot of repairs on this vehicle, but most recently it started to stall mainly on idle, the worst was on the highway and there was a slowdown and I hit about 20 MPH. It doesn't happen right away, usually about 20-30 minutes of driving time goes by before then. I notice my emergency brake light randomly turns on and off, as well as my service vehicle soon light but less often.

I've replaced spark plugs, the wiring, coils, fuel filter, and a few others fairly recently. The fuel pump was replaced a few years back. I have gotten to the point where when I come to a stop, I have to hold the brake pedal and rev the engine a bit while I wait to move again.

Any thoughts or advice?