5.4 BAD STUTTER, ENGINE STALLING WHEN THE MOTOR GETS UP TO TEMPERATURE
1999 Ford F-150
February, 17, 2012 AT 4:42 AM
Truck has 192000 miles on it, had a new motor put in with approx 125000 miles on it. About 400 miles later it now stalls when under acceleration, almost feels like a cylinder isn't firing. Runs perfect when the motor is cold, idle's fine regardless of temp. No error codes from the computer. Have replaced fuel filter, air filter, and just did my spark plugs and no change.