dies when u left off the gas
 

ok so i got the drive the stang today runs pretty good but every time u left off the gas it dies just like u shut the key off but it will start right up

in this cold weather, did you adjust the choke on the carb???

dont have a choke it was at op temp if that means anything

when did all this occur??

this is the first time i have drove it so i guess today lol

so after the restart, will it stay running or does it start/stall/start/stall.

it will stay runnin untill u drive it and u let off the gas to brake or change gears

the car idles fine it only dose it when u drive it

OK so is there like a dash pot or something to adjust. Most carbs have something to stop the stall when it returns to idle. What's the base idle set at. Any vacuum leaks

800 rpm no vac leaks all new vac lines