Ford E-350 Super Duty won't drive when shifted into gear, only idles on Ford E-350 Super Duty

Some Ford E-350 Super Duty owners report experiencing issues where the vehicle won't drive when shifted into gear and only idles. Common causes for this problem include a clogged air filter, dirty mass air flow sensor, clogged fuel filter, fuel pump malfunction, faulty oxygen sensor, dirty throttle body, worn spark plugs, and clogged catalytic converter. Additionally, some owners notice rough idling and stuttering at take-off, often accompanied by a check engine light, which may indicate a "too lean" condition linked to fuel system failures. In specific cases, owners have reported that the vehicle starts, idles briefly, and then dies, sometimes accompanied by a loud air sound, even after replacing components like the fuel pump, throttle position sensor, and idle air control valve. To address these issues, it is recommended that owners check and replace the air filter, mass air flow sensor, fuel filter, and oxygen sensor, as well as inspect and clean the throttle body and verify the condition of the spark plugs. If problems persist, consulting with a professional mechanic or dealership for a thorough diagnosis and repair is advisable.