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1999 Ford F-250 Super Duty Lariat 5.4L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Poor Fuel Economy
Posted to Ford Driveability on 11/17/2015 13 Replies

Customer complained of lack of power and surging and bucking from [...] is running rich. Hooked Modis Ultra scan tool to vehicle and read pids. The ECT reads -40 [...] ECT and tested ect and found battery voltage at connector end and ground read.02.I figured o...

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car Vehicle Data

1999 Ford F-250 Super Duty Lariat

VIN 1FTNF20L2X
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Surge, Cuts Out, Stall, Poor Fuel Economy
OccursAlways, Cold, Under Load, on Accel
Message Closed w/FIX

car Vehicle Data

1999 Ford F-250 Super Duty Lariat

VIN 1FTNF20L2X
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Surge, Cuts Out, Stall, Poor Fuel Economy
OccursAlways, Cold, Under Load, on Accel