what is wrong when your car starts up and then kill when you try to accelerate

This could be a few things but here are some ideas as to what can be causing it to die out. Throttle body or throttle position sensor fault. Vacuum leak Low Fuel pressure One of many engine sensors not reporting properly You will want to start with scanning for codes. Trouble codes will point you in the right direction. If there aren't any then looking at actual values can help. If you prefer to bring your car to a shop, then use this link to find a good one near you. https://repairpal.com/repair-shops Alex