Steering Effort Hard in One or Both Directions. Buick Riviera 1999

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1999 🢒 Riviera 🢒 Steering 🢒 Power Steering System 🢒 Steering Effort Hard in One or Both Directions

Steering Effort Hard in One or Both Directions Increase of Effort

Condition

Causes

A momentary increase in effort when turning the wheel fast to the right or to the left.

•	High internal spool valve leakage

•	Steering gear leakage

•	A sticking or a damaged pinion spool valve

•	Insufficient pump pressure

•	Low fluid level

Conditions

Causes

•	Hard steering is present.

•	Lack of assist is present.

•	A Magnasteer™ system malfunction at low speeds

Refer to Steering Controls Schematics in Variable Effort Steering.

•	A damaged intermediate shaft coupling

•	A worn intermediate shaft coupling

•	Tight steering column bearings

•	A sticking flow control valve

•	Insufficient pump pressure

•	Air in the power steering system

•	Low fluid level

•	Excessive internal pump leakage

•	Excessive internal rack and pinion leakage