Question

On my 1997 Ford F250 7.5L, why does the engine stall after driving 10 miles? I got the engine codes P0496 and P0502

Answer 1

P0496 Evaporative emission flow during non - purge

P0502 Vehicle speed sensor low input

The vehicle speed sensor having low input, and the EVAP purge being slightly stuck open , neither one of these sensor can cause the engine to stall out , There are certain factor that make a vehicle stall out at certain condition , Is there a low idle? , does it stall out at highway speeds? , does it stall out coming in from a stop? These have to be know so a solution can be found.

Answer 2

P0496 FORD - Evaporative Emission System High Purge Flow
Read more: https://www.autocodes.com/p0496_ford.html

P0502 FORD - Vehicle Speed Sensor 'A' Low Input
Read more: https://www.autocodes.com/p0502_ford.html