A Power Steering Pump failure is rarely a sudden collapse and often will give some indication that it is failing. Knowing what to look for could save you a lot of grief in the long run.
Whining That Changes With Steering Input
A failing power steering pump is nearly always announced by a whining or even grinding noise. If the noise seems to increase in intensity as you turn the steering wheel to full lock and then decreases when you return to driving in a straight line, it’s likely to be your power steering pump failing rather than a worn tire or worn wheel bearings.
Steering That Feels Suddenly Heavier at Low Speed
Catching these signs early almost always means a simpler, cheaper fix. A failing power steering pump rarely gives out without warning. Knowing what to look for early can save you from a breakdown or a failed MOT.
Inconsistent or Surging Steering Feel
There are instances when a worn power steering pump valve or low power steering pump fluid pressure can cause a surging or variable feeling while steering. This typically feels easy when steering in one direction and then suddenly becomes hard when trying to steer in the opposite direction.
A Burning Smell From the Engine Bay
Burning Smell: A sustained worn condition can cause the hydraulic fluid to overheat and develop a faint burning or sweet smell. This smell will typically emanate from the location of the belt and pulley and will disappear when the wheel is released from full lock. However, it will return when the wheel is once again locked full.
Discoloured Fluid in the Reservoir
Power Steering Fluid: Healthy fluid looks clear or is a lightish pink colour. Contamination in the system from internal wear could cause the fluid to turn a dark brown colour or even a grey colour over time. This can be checked by removing the reservoir cap and taking a look after a while.
If you want a steering pump, https://westernpowersteering.co.uk/steering-parts/pump/ is a good place to start.
This can all be fixed with a simple power steering pump replacement if you catch it in time.
