What Causes the Steering Wheel to Suddenly Become Stiff?

[LandonLee]

There are many reasons why the steering wheel suddenly becomes stiff. Here are the specific details: The reasons why a car's steering wheel suddenly becomes stiffer include: Insufficient tire pressure, contaminated power steering fluid, internal failure of the power steering system, and poor bearing lubrication. How the steering wheel works: Steering wheels are categorized into single-spoke, double-spoke, triple-spoke, and four-spoke designs. Their working principle involves transmitting torque to the rack-and-pinion mechanism, thereby pushing the wheels to turn left or right. Solutions for a car's steering wheel suddenly becoming stiffer: Replenish hydraulic power steering fluid, replace circuit fuses, replace flat bearings, replenish kingpin grease, and add lubricating oil to the steering tie rod ball joints.