2009 Ford E-350 Super Duty 5.4L Hesitation, Surge
Truck hestitates & surges under load only, hot or cold, we can simulate it in the bay, it is not misfiring, when it does it the ecm is dropping the fuel pump duty cycle to 30% and commanding the throttle plates to close slightly, does it with the mass airflow ...
FIX posted 1/15/2016
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Message Closed w/FIX
Vehicle Data2009 Ford E-350 Super Duty
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Message Closed w/FIX
Vehicle Data
2009 Ford E-350 Super Duty
VIN | 1FDWE35L99 |
Engine | 5.4 L / 8 cyl / FLEX |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / efi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, Surge |
Occurs | Under Load |