car starts, runs and idles fine, but when i come to a stop at like a stop sign or street light, it cuts off, but will start back up and drive off, but soon as i push the brake to slow down or stop it stalls and then cuts off, any ideas ? i have a new exhuast system, and spark plugs, just changed the oil, and main relay ?????

 

not main relay this time LOL
What is the idle speed with the engine warm and car in park?
If the idle/rpm takes a dive when the engine is warm and in park/neutral it is usually a sign of a vacum leak. The brake booster uses a large amount of vacum when you step on the brake.
You could also check to be sure the screen on the EACV are not plugged up with crud.

 

it doesnt idle up and down while in park or N , i had that fixed last year, but imma check the eavc

 

did you check your battery terminals

 

when it dies, the power stays on, all lights and music