Engine not idling and stalling?

Hello, I'm Danny.

Something that might help with all the complications and problems with years old gas is Seafoam brand treatment. I used this on a car that had 5 year old gas in the tank and wouldn't start. I added this to the tank shook the car around for 5 minutes and it started. I've attached a picture of the product below. Hope this might help and thanks for using 2CarPros.

I AM very familiar with the low idle problem. The first place to look is if the battery was recently disconnected or run dead. If it was, the Engine Computer needs to relearn "minimum throttle" before it will know when it must be in control of idle speed. Until then, you might need to hold the accelerator pedal down 1/4" to get the engine to start, you won't get the nice idle flare-up to 1500 rpm at start-up, and it may tend to stall at stop signs. To meet the conditions for the relearn to take place, drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the pedals. This sounds like you have a vacuum leak, dirty throttle bore or the IAC motor is not working but to be sure lets check out these guides to help us fix it.

https://www.2carpros.com/articles/stall-at-idle

and

https://www.2carpros.com/articles/throttle-actuator-service

and

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

Please run down these guides and report back.

Check ignition timing and scan for codes and check fuel pressure with a gauge. See picture and see link.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator