at stop sine it die's some time's but strats right back up on 1999 Buick LeSabre

some time 's then other time's runs good for day's

Asked by for the 1999 Buick LeSabre
2 answers
Check for any codes, does your yellow service engine soon light ever come on? If so, get those codes!

here are some shops:

https://repairpal.com/directory?address=52653&car_brand_names=Buick
It could be your fuel filter is clogged, or maybe you need to replace the fuel pump. Get it tested, good luck