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1970s: Power steering becomes standard in cars In the 1970s, power steering racks gradually changed from an optional configuration to a standard configuration for most cars on the US market. In particular, as the size and weight of cars increased further, manual steering systems became increasingly impractical.

The power steering gear is connected to the vehicle's steering link, which is directly connected to the wheel knuckle. When replacing the power steering gear, the steering link must be removed from the steering knuckle.

If the power steering pump is over-operated for a long time, especially when driving at low speed or parking, the pump will generate too much heat due to excessive load, which will directly accelerate the deterioration of the fluid.

Manual steering system: no steering fluid is required. Hydraulic power steering system: steering fluid is required. The steering fluid in the hydraulic system is responsible for transmitting pressure, lubrication and heat dissipation. Electronic power steering system: no steering fluid is required.

The environment around the rack and pinion gear is relatively complex, especially in some harsh driving conditions, mud, sand, dust and other external debris can easily enter the steering system. These debris may accumulate between the rack and pinion gear, causing it to engage poorly.

Oil leakage is one of the most common problems in Ford Fiesta steering rack, especially in aging or damaged steering systems. Oil leakage usually occurs in hydraulic power steering systems. Although most modern Ford Fiestas use electric power steering (EPAS) systems, hydraulic systems are still used in some older models.

Some reports indicate that in the case of severe leaks, if the owner checks the fluid level before starting the vehicle and replenishes the fluid in time, the vehicle can be driven for about 400 miles. However, this practice is only a temporary measure and is not a long-term solution.

Once a leak occurs, the hydraulic pressure of the system will drop, resulting in weakened power assistance or complete failure. In this case, the driver needs to use more force to turn the steering wheel, especially parking and turning operations at low speeds will become very difficult.

If the gears inside the steering rack are worn or loose, it may make an abnormal knocking sound when the steering wheel is turned. In addition, insufficient lubrication of the steering gear may also cause this situation.

If the motor in the electric steering rack fails, it is generally repairable. Common problems with motors, such as brush wear, coil breakage, or poor electrical contact, can usually be repaired by replacing certain parts of the motor.