1991 Ford F super duty problems
The Ford Super Duty (also known as the Ford F-Series Super Duty) is a series of heavy-duty pickup trucks produced by the Ford Motor Company since the 1999 model year. Slotted above the consumer-oriented Ford F-150, the Super Duty trucks are an expansion of the Ford F-Series range, from F-250 to the F-600. The F-250 through F-450 are offered as pickup trucks, while the F-350 through F-600 are offered as chassis cabs.
Rather than adapting the lighter-duty F-150 truck for heavier use, Super Duty trucks have been designed as a dedicated variant of the Ford F-Series. The heavier-duty chassis components allow for heavier payloads and towing capabilities. With a GVWR over 8,500 lb (3,900 kg), Super Duty pickups are Class 2 and 3 trucks, while chassis-cab trucks are offered in Classes 3, 4, 5, and 6. The model line also offers Ford Power Stroke V8 diesel engines as an option.
Ford also offers a medium-duty version of the F-Series (F-650 and F-750), which is sometimes branded as the Super Duty, but is another chassis variant. The Super Duty pickup truck also served as the basis for the Ford Excursion full-sized SUV.
The Super Duty trucks and chassis-cabs are assembled at the Kentucky Truck Plant in Louisville, Kentucky, and at Ohio Assembly in Avon Lake, Ohio. Prior to 2016, medium-duty trucks were assembled in Mexico under the Blue Diamond Truck joint venture with Navistar International.
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Common 1991 Ford F super duty problems
The Ford F-Super Duty 1991 is known for several common problems that affect its performance and durability. These problems are related to the engine, suspension, and steering system.
One of the most common problems with the Ford F-Super Duty 1991 is engine overheating. This issue is caused by various factors, such as a leaking water pump, a faulty thermostat, a clogged radiator, or a low coolant level. Overheating can cause severe damage to the engine components, such as warped cylinder heads, blown head gaskets, cracked blocks, or seized pistons. One of the symptoms of overheating is a high-temperature gauge reading or a warning light on the dashboard.
Another common problem with the Ford F-Super Duty 1991 is oil leaks. The engine has several potential sources of oil leaks, such as the timing cover, the rear main seal, the oil pan gasket, the valve cover gaskets, and the oil cooler. Oil leaks can cause oil consumption, oil pressure loss, engine noise, or fire hazards. One of the symptoms of oil leaks is a low oil level indicator or a puddle of oil under the vehicle.
The Ford F-Super Duty 1991 is also known for poor fuel efficiency. The average fuel economy of the Ford 7.5 engine is about 10 miles per gallon (mpg) in city driving and 14 mpg on the highway. Some of the factors that affect the fuel efficiency of the Ford 7.5 engine are the carburettor system, the ignition system, the emission system, and the driving habits. One of the symptoms of poor fuel efficiency is a high fuel consumption rate or low gas mileage.
Ignition problems are also common in the Ford F-Super Duty 1991. These issues are caused by worn spark plugs, faulty spark plug wires, or a weak ignition coil. Ignition problems can cause misfires, rough idle, loss of power, poor acceleration, or hard starting. One of the symptoms of ignition problems is a check engine light or a trouble code stored in the computer.
The Ford F-Super Duty 1991 is also known for suspension problems. These issues are caused by worn ball joints, control arm bushings, track bars, or tie rods. Suspension problems can cause steering wobble, vibration, or noise. One of the symptoms of suspension problems is a loose or unstable steering wheel.
The steering system of the Ford F-Super Duty 1991 is also known for problems. These issues are caused by worn steering boxes, steering gears, or steering pumps. Steering problems can cause hard steering, excessive steering wheel play, or leaks. One of the symptoms of steering problems is a low power steering fluid level or a fluid leak.
In summary, the Ford F-Super Duty 1991 is known for several common problems that affect its performance and durability. These problems are related to the engine, suspension, and steering system. Regular maintenance and timely repairs can help prevent or fix these issues and ensure the longevity and reliability of the vehicle.
What are the worst years for f250 Super Duty?
The worst years for used Ford F-250 include:
- 2002 Ford F-250.
- 2006 Ford F-250.
- 2008 Ford F-250.
- 2011 Ford F-250.
- 2017 Ford F-250.
Is Ford Super Duty a reliable car?
Ford Super Duty Honored as America's Most Dependable Large Heavy-Duty Pickup by J.D. Power. DEARBORN, Mich., Feb. 8, 2024 – The 2021 Ford Super Duty is the most dependable large heavy-duty pickup in the J.D. Power 2024 U.S. Vehicle Dependability Study, based on feedback from drivers after three years of ownership.
What is the most reliable Ford Super Duty year?
Reliability refers to how well the vehicle can handle heavy loads and rough terrains. The model years 2005, 2009, 2011, and 2020 were some of the stand-out models from the four generations of Ford F-250.
How many miles can a Ford Super Duty last?
I use it like a truck should be used, haul & tow the heck out of it. Everything still works like it should. Ford brands its largest pickup trucks, F-250 and up, as Super Duty trucks. According to Motor and Wheels, the average Ford Super Duty lasts 200,000 miles.
What are the worst years for f250 Super Duty?
The worst years for used Ford F-250 include:
- 2002 Ford F-250.
- 2006 Ford F-250.
- 2008 Ford F-250.
- 2011 Ford F-250.
- 2017 Ford F-250.
What are the bad years for Power Stroke?
Issues with the Ford 6.7-liter Power Stroke are most pronounced in the first generation (2011-2014), but some problems have transcended generations. The injection pump could be trouble in pre-2020 engines.
What years did Ford have a bad diesel engine?
The 6.4-liter Powerstroke engine was very short-lived. It was put in Ford trucks beginning in 2007 for the 2008 model year and the last production year was 2011 for the 2010 model year. The 6.4 Powerstroke came after the 6.0 Powerstroke, which was widely panned for its problems and poor performance.
What is the most reliable Ford Super Duty year?
Reliability refers to how well the vehicle can handle heavy loads and rough terrains. The model years 2005, 2009, 2011, and 2020 were some of the stand-out models from the four generations of Ford F-250.
1991 Ford F super duty car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Ford F super duty problems, we found that the most common problems with these 2023 model year vehicles are:
- Fuel system problems
- Gasoline problems
The graph below shows statistics for all 1991 Ford F super duty vehicle components and the number of complaints received.
1991 Ford F super duty complaints
The NHTSA has received 1 complaints about various vehicle components related to the 1991 Ford F super duty.
FUEL SYSTEM, GASOLINE PROBLEM
- Date Of Incident: 2024-11-24
- VIN: 1FTEX15N3MK
- Components: FUEL SYSTEM, GASOLINE
- Summary: FUEL LEAKAGE FROM DUAL TANKS OR CROSSOVER VALVE/LINES WHEN FULL OR DURING WARM WEATHER CONDITIONS. *AK
1991 Ford F super duty recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 1991 Ford F super duty.
- Manufacturer: FORD MOTOR COMPANY
- Components: FUEL SYSTEM, GASOLINE
- Summary: THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. VEHICLE DESCRIPTION: 1990-1993 FORD F-SERIES VEHICLES EQUIPPED WITH DUAL FUEL TANKS AND 4.9, 5.0,5.8, OR 7.5 LITER GASOLINE FUELED ENGINES. SOME VEHICLES CAN EXPERIENCE A CROSS TANK FUEL FLOW CONDITION DUE TO A DAMAGED CHECK VALVE IN THE FUEL PUMP/SENDER ASSEMBLY. FUEL MAY BE SUPPLIED FROM ONE TANK AND SOME OR ALL OF THE UNUSED FUEL MAY BE RETURNED TO THE OTHER TANK.
- Consequence: SHOULD THIS OCCUR, THE CAPACITY OF THE RECEIVING TANK MAY BE EXCEEDED AND FUEL MAY OVERFLOW FROM THE FILLER CAP.
- Remedy: FORD IS EXTENDING THE WARRANTY FOR POTENTIAL FUEL CROSS-FLOW TO 12 YEARS OF SERVICE OR 150,000 MILES FROM THE VEHICLE'S WARRANTY START DATE, WHICHEVER OCCURS FIRST. THIS COVER WILL AUTOMATICALLY TRANSFER TO SUBSEQUENT OWNERS AT NO CHARGE. IF A VEHICLE ALREADY HAS MORE THAN 150,000 MILES, THIS OVERAGE WILL LAST UNTIL DECEMBER 31, 2001. IF THE VEHICLE IS EXPERIENCING A FUEL CROSS-FLOW CONDITION, DEALERS WILL REPAIR THE CONDITION FREE OF CHARGE.
- Manufacturer: FORD MOTOR COMPANY
- Components: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
- Summary: A MALFUNCTIONING CHECK VALVE WITHIN THE FUEL PUMP ASSEMBLY CAUSES A PORTION OF THE UNUSED FUEL FROM ONE TANK TO BE RETURNED TO THE SECOND TANK. WHEN THIS OCCURS, THE CAPACITY OF THE SECOND TANK CAN BE EXCEEDED, CAUSING FUEL SPILLAGE.
- Consequence: SPILLED FUEL CAN RESULT IN A FIRE WHEN EXPOSED TO ASOURCE OF IGNITION.
- Remedy: REPLACEMENT OF THE FUEL PRESSURE REGULATOR AND INSTALLATION OF REDUNDANT CHECK VALVES.
Additional sources
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