Pinpoint Test B: Steering Has Lack Of Assist Or Inconsistent Assist - Vehicles With Hydro-Boost(R)

Steering System







Pinpoint Tests

Pinpoint Test B: Steering Has Lack of Assist or Inconsistent Assist - Vehicles With Hydro-Boost(R)

NOTE: Hard steering or lack of assist is experienced when the steering wheel effort exceeds specifications. Hard steering can remain constant through the full turn, occur near the end of a turn or differ right to left. It is important to know the difference between hard steering/lack of assist and poor returnability/sticky steering.

This pinpoint test is intended to diagnose the following:
- Steering gear
- Power steering pump
- Power steering hoses



PINPOINT TEST B: STEERING HAS LACK OF ASSIST OR INCONSISTENT ASSIST - VEHICLES WITH HYDRO-BOOST(R)

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B1 CHECK THE STEERING ASSIST WITH THE ENGINE RPM RAISED


- NOTICE: Do not hold the steering wheel at the stops for an extended amount of time. Damage to the power steering pump can occur.

- Set the engine at 2,100 rpm and turn the steering wheel fully to the left and right.
- Is steering assist normal with the engine rpm raised?

Yes
INSTALL a new power steering pump. REFER to Steering.

No
GO to B2.

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B2 CHECK FOR A CHANGE OF ASSIST ON LEFT AND RIGHT TURNS


- With the engine at idle, turn the steering wheel fully to the left and to the right.
- Does the steering assist change when turning from right to left?

Yes
INSTALL a new steering gear. REFER to Steering.

No
CARRY OUT the Pump Flow and Pressure Component Test. Pump Flow and Pressure Test - Vehicles With Hydro-Boost(R)

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