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1999 Ford F-350 Super Duty Lariat 6.8L Low power
Posted to Ford Driveability on 5/7/2015 6 Replies

Have a 1999 with the 6.8 V10 that has me puzzled. Customer brought with a low power complaint during partial to full throttle. Looked over the basics checking fuel pressure which was 38psi under load. This compares to other Ford products at our altitude of 330...

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car Vehicle Data

1999 Ford F-350 Super Duty Lariat

VIN 1FTSW31S5X
Engine6.8 L / 10 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsLow Power
OccursHot, Under Load, on Accel
Message Closed w/FIX

car Vehicle Data

1999 Ford F-350 Super Duty Lariat

VIN 1FTSW31S5X
Engine6.8 L / 10 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsLow Power
OccursHot, Under Load, on Accel