Power Steering Pump Or Steering Rack Issues Causing Heavy Or Uneven Steering

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM	POSSIBLE CAUSES	ACTION
Excessive steering efforts required both when the vehicle is in motion and during stationary maneuvering	Low power steering fluid or power steering fluid leak	Refer to the Heavy Steering/Steering Has Uneven Effort pinpoint tests. GO to PINPOINT TEST K .
	Power steering pump output fluid delivery pressure or flow too low
	Power steering hose, fluid cooler or reservoir restriction
	Power steering fluid aeration
	Damaged front end accessory drive belt tensioner	Refer to: Engine System/General Information/Diagnosis and Testing
	Steering transducer or cable fault	Refer to the Heavy Steering/Steering Has Uneven Effort pinpoint tests. GO to PINPOINT TEST O .
	Speedometer signal error
Steering operation is very light when VEHICLE IS IN MOTION AT HIGHER SPEEDS, but when stationary maneuvering is NORMAL	Steering transducer or cable fault	Refer to the Heavy Steering/Steering Has Uneven Effort pinpoint tests. GO to PINPOINT TEST O .
	Speedometer signal error
Steering operation is heavy when stationary maneuvering, but improves when the engine speed is increased	Power steering pump output fluid delivery pressure or flow too low	Refer to the Heavy Steering/Steering Requires Uneven Effort pinpoint tests. GO to PINPOINT TEST M .
Steering operation is heavy in one direction	Lower steering column interference	Check the steering column is free from interference from the engine harness, sound proofing or the floor covering
	Incorrect steering geometry/suspension damage	NOTE: Dealerships must keep a copy of the BEFORE and AFTER geometry figures with job card for future reference Check and adjust the front wheel alignment. Refer to: SUSPENSION SYSTEM - GENERAL INFORMATION
	Faulty steering gear	Refer to the Heavy Steering/Steering Has Uneven Effort pinpoint tests. GO to PINPOINT TEST K .
	Tire fouling on the wheel arch liner or suspension components	Check for correct installation or damage to wheel arch liner and suspension components. Correctly install and install new components as required Check tire for correct size, type and pressure
	Damaged steering gear transfer pipe	Refer to the Power Steering Fluid Leaks From The Power Steering Rack pinpoint tests. GO to PINPOINT TEST D .
	Steering column universal joints binding or stiff	Refer to: STEERING COLUMN / PINPOINT TESTS
Steering operation varies from heavy to light when driving at constant speed	Lower steering column interference	Check the steering column is free from interference from the engine harness, sound proofing or the floor covering
	Steering transducer or cable fault Incorrect speedometer signal	Refer to the Heavy Steering/Steering Has Uneven Effort pinpoint tests. GO to PINPOINT TEST O .
	Steering column universal joint binding or stiff	Refer to: DIAGNOSTIC PROCEDURES FOR STEERING LINKAGE
Steering wanders when VEHICLE IS IN MOTION AT HIGHER SPEEDS	Incorrect steering geometry/suspension damage	NOTE: Dealerships must keep a copy of the BEFORE and AFTER geometry figures with job card for future reference Check and adjust the front wheel alignment. Refer to: SUSPENSION SYSTEM - GENERAL INFORMATION
Steering wanders when VEHICLE IS IN MOTION AT HIGHER SPEEDS	Tie-rod free play	Refer to: STEERING LINKAGE / PINPOINT TESTS