The car starts most of the time, but as soon as I press the gas pedal, the car shuts off.
You likely have an engine vacuum leak, or another issue related to a sensor; a visual inspection is required to initially find the problem. Afterwards, a diagnostic tool will be required to scan for codes. An inspection of your stalling issue from a qualified technician, such as one from YourMechanic, is a good place to start.
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