The worst 1993 International Harvester 3900FC problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
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Recalls 2
Service brakes, hydraulic: power assist: hydraulic
- What is wrong
- The hydraulic brake system on these buses uses two hydraulic pressure switches to operate the brake lights and the brake booster pump. The brake pressure warning light can activate when actual system failure has not occurred.
- Risk
- A false warning of the brake pressure warning light can cause the driver to ignore a warning when an actual problem exists which could result in an accident.
- Remedy
- Dealers will replace the two hydraulic pressure switches with one mechanical switch that is activated by brake pedal stroke.
Recall number 94V234000 · Recall details
Suspension: rear: springs: air suspension system
- What is wrong
- The pressure relief valve was omitted in the air tank. The air tank is the reservoir for the air suspension and is not brake related. Without the pressure relief valve, there is no back-up system to limit air pressure in the air suspension system.
- Risk
- Lack of a back-up system to limit air pressure build upcan cause excessive pressure in the air tank and can cause the tank to rupture.this can result in personal injury to anyone in the vicinity.
- Remedy
- Install a pressure relief valve in the air tank.
Recall number 93V092000 · Recall details
See all 2 recalls for the 1993 International Harvester 3900FC
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Questions about the 1993 International Harvester 3900FC
Is the 1993 International Harvester 3900FC reliable?
Owners have filed 0 complaints about the 1993 International Harvester 3900FC.
What is the most common problem with the 1993 International Harvester 3900FC?
There are not enough complaints to tell.
How many recalls does the 1993 International Harvester 3900FC have?
2 recalls, covering service brakes, hydraulic and suspension.
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