1991 International Harvester 3700 1991 Base Bus (Non School) – Cab Forward

Common Issues

Owners of the 1991 International Harvester 3700 may encounter issues such as:

• Fuel system problems, particularly with the injection system.
• Electrical system failures, including issues with wiring and connections.
• Turbocharger wear, leading to reduced performance.
• Suspension and steering component wear due to heavy usage.

Maintenance Tips

To keep your International Harvester 3700 running well, consider the following maintenance tips:

• Regularly change the oil and oil filter to ensure engine longevity.
• Inspect and replace air and fuel filters as needed.
• Check the cooling system for leaks and maintain proper coolant levels.
• Monitor tire condition and pressure for optimal handling.

Typical Repair/Owership Cost Ranges

Repair and ownership costs for the 1991 International Harvester 3700 can vary significantly based on the condition and usage of the vehicle. Typical costs may include:

• Routine maintenance: $200 - $500 annually
• Minor repairs: $300 - $800
• Major repairs (engine or transmission): $2,000 - $5,000
• Replacement parts (average): $100 - $1,000 depending on the component

Buying Advice (What to Inspect)

When considering purchasing a 1991 International Harvester 3700, inspect the following:

• The engine for any signs of leaks or excessive wear.
• Suspension components for wear and rust.
• The condition of the fuel system, particularly the injector pump.
• Electrical system functionality, including lighting and gauges.

FAQ

What is the fuel efficiency of the 1991 International Harvester 3700?

Fuel efficiency can range between 8 to 12 miles per gallon, depending on load and driving conditions.

What type of oil should I use for the engine?

A high-quality diesel engine oil with a viscosity rating of 15W-40 is recommended.

Are parts readily available for this model?

Yes, many parts can be found through specialized suppliers and online marketplaces.

How often should I perform maintenance?

Routine maintenance should be performed every 5,000 to 7,500 miles or as specified in the owner's manual.

Is the 1991 International Harvester 3700 suitable for long-distance travel?

Yes, it can be suitable for long-distance travel if maintained properly, but comfort may vary based on the specific setup and configuration.

What should I do if the turbocharger fails?

Consult a mechanic for a thorough inspection and consider replacing the turbocharger if it's deemed necessary.