1991 Ford Heavy duty problems

Common 1991 Ford Heavy duty problems

The 1991 Ford Heavy Duty is known to have several common problems, primarily related to its transmission, suspension, fuel system, and steering.

• Ball Joints:
  The ball joints on 1990-1996 Ford F-150s, including the 1991 Heavy Duty, have been particularly vulnerable to water exposure. If exposed, the ball joints are liable to expire prematurely, necessitating replacement.

• Hard Starting:
  Drivers have reported complaints of hard-starting on 1990-1996 model F-150s, including the 1991 Heavy Duty. Ford has attributed this issue to faulty harness wiring in the power control module. Symptoms of the problem include vehicular stalling, hesitation, and failure to start. On 1995 and 1996 Ford trucks, hard-starting has also been linked to a stuck idle air control valve.

• Suspension Problems:
  Owners of 1991 to 1994 Ford trucks, including the Heavy Duty, have reported problems with the front suspension system. The problem is due to weak leaf springs along the front of the vehicle. To fix the issue, get newer, stronger leaf springs. If the truck has twin-axle suspension, cupping is liable to occur with the front tires. You can remedy the issue with new springs or added leaves. However, some cases require the change-out of additional replacement parts. In any case, you must get the suspension properly aligned.

• Vehicle Noise:
  Drivers have reported complaints of rear noise on 1990-1996 Ford trucks, including the 1991 Heavy Duty. The noise resembles a chattering sound and occurs during soft turns after driving the vehicle at high speeds. The problem is down to one of two causes: an insufficient friction modifier or a faulty Traction-Lok differential. If the rivets are loose on the frame, change out the rivets for bolts.

• Recall History:
  In 1993, the Ford F-150 with Touch Drive was the subject of a recall. The issue involved the transfer case, which tended to fall out of high gear when the vehicle was coasting. Another issue from the same year involved Fords with dual fuel tanks, which were recalled due to system issues. The problem stemmed from the regulator, which could wear prematurely and lead to high-system fuel pressure. On 1993 Ford F-150 (and F-250 and F-350) models with speed control systems, internal leaking was linked to the deactivation switch.

• Death Wobble:
  The 1991 Ford Heavy Duty, like other Ford trucks, is prone to a phenomenon known as the "death wobble," which is a violent shaking of the front end at high speeds, typically above 45 mph. This issue is often caused by loose or worn-out steering components, such as tie rods, drag links, or track bars.

• Brake Woes:
  Some 1991 Ford F-250 owners have reported issues with their brakes, including a hard pedal and random dying of the vehicle while driving. These problems can be caused by issues with the vacuum system, fuel system, or brake components.

These common problems with the 1991 Ford Heavy Duty are based on complaints from owners and may require professional diagnosis and repair.

How much is a 1991 Ford f250 worth?

1991 Ford F-250 Value - $1,599-$7,124 | Edmunds.

What engine is in a 1991 Ford f250?

Used 1991 Ford F-250 XLT Lariat - Specs & Features

Engine
Base engine size	5.8 L
Cylinders	V8
Base engine type	Gas
Horsepower	210 hp @ 3,800 rpm

How long does a Ford diesel truck last?

350,000 to 500,000 miles

That said, while most gas engines are intended to last at least 200,000 miles on average, a diesel truck that is well-maintained can potentially last 350,000 to 500,000 miles. Those used mainly for highway driving and carrying minimal loads will typically get closer to the top-end of the range.

How much does a 1991 Ford f250 weigh?

Used 1991 Ford F-250 - Specs & Features

Dimensions
Wheelbase	133.0 in.
Maximum towing capacity	10,000 lbs.
Maximum payload	2,465.0 lbs.
Gross weight	6,800 lbs.

What engine does a 1991 Ford f250 have?

Used 1991 Ford F-250 XLT Lariat - Specs & Features

Engine
Base engine size	5.8 L
Cylinders	V8
Base engine type	Gas
Horsepower	210 hp @ 3,800 rpm

Where are Ford heavy duty trucks made?

This is our most profitable plan globally. And super duty I think is 40. Share in the US like it's twice as big as the next competitor. And it's because of the hard work here.

What is Ford's most powerful diesel?

6.7L Power Stroke V8

1. 6.7L Power Stroke V8. The 6.7L Power Stroke V8 is one of the best Ford diesel engines ever produced. It offers exceptional power, torque, and fuel efficiency.

What is the specs of the 1990 F Super Duty?

The F-Super Duty Chassis-Cab (4x2) heads this tough lineup with a 14,500-pound GVWR and 137/ 161-inch wheelbases. It's powered by the 75 liter V-8 with a 73 liter V-8 diesel option. GCWR's for tow- ing applications go up to an impressive 26,000 pounds with the 7.5 liter engine and 18,000 pounds with the diesel.

1991 Ford Heavy duty car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Ford Heavy duty problems, we found that the most common problems with these 2023 model year vehicles are:

• Service brakes problems
• Hydraulic problems

The graph below shows statistics for all 1991 Ford Heavy duty vehicle components and the number of complaints received.