My car began cutting off after I got a tune-up.
I would need more information on what repairs were performed to be able to give a more full answer. But by cutting off, I am assuming the car stops running. This could be be caused by a few things, such as fuel or spark plug issues. My best recommendation would be to have your vehicle inspected by a qualified technician, such as one from YourMechanic. They will be able to diagnose your car's stalling issue and make the needed repairs.
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