× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1999 Ford F-250 Super Duty XLT 6.8L Low power
Posted to Ford Driveability on 9/27/2011 8 Replies

Vehicle have low power on heavy Acceleration. Checked fuel pressure 30-42 psi., MAF at idle is around 8gps and 180ish around 3500 rpm under full throttle. Can not get vehicle to tach out to get a full MAF #. Attached a vacuum gauge and under a power brake cond...

8 Replies Received (View Replies)

  Related Documents & Media  1999 Ford F-250 Super Duty XLT

 
Message Closed w/FIX

car Vehicle Data

1999 Ford F-250 Super Duty XLT

VIN 1FTNX21SXX
Engine6.8 L / 10 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsLow Power
OccursAlways, Under Load, on Accel
Misc.6.8L
Message Closed w/FIX

car Vehicle Data

1999 Ford F-250 Super Duty XLT

VIN 1FTNX21SXX
Engine6.8 L / 10 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsLow Power
OccursAlways, Under Load, on Accel
Misc.6.8L