95 Riviera, Noise from Right Front

Sounds like a wheel bearing, but I've replaced it (with a Timken), replaced CV Shaft, switched tires around, no difference. Turn left; noise. Turn right; no noise. Notice it more at low speeds than high. Could it be rotor or caliper?

tloukaitis wrote:

Sounds like a wheel bearing, but I've replaced it (with a Timken), replaced CV Shaft, switched tires around, no difference.  Turn left; noise.  Turn right; no noise.  Notice it more at low speeds than high.  Could it be rotor or caliper?

Can you record it and post a sound file?

Inspect your brakes.

The brakes are fine. But, if it were brakes, why wouldn't the sound be continuous, not just on a left turn? There's too much other noise going on to get a good recording of the specific sound.

tloukaitis wrote:

The brakes are fine.  But, if it were brakes, why wouldn't the sound be continuous, not just on a left turn?  There's too much other noise going on to get a good recording of the specific sound.

Because the rotor assembly moves when you turn, and puts "pressure" on the opposing brake pad. It's the exact same concept as a hub.

Inspect your brakes. More importantly, inspect that little shield that hangs down behind the lower ball joint. I'm willing to bet it's touching the rotor.

https://rivperformance.editboard.com/t1580-steering-shudder-pump-or-rack-noise?highlight=steering+hose+tsb


Steering - Vibration, Shudder, or Moan Noise

File In Section: 02 - Steering Bulletin

No.: 99-02-32-007A

Date: February, 2001

TECHNICAL
Subject:
Steering Vibration/Shudder/Moan During Parking Maneuvers on Dry Pavement (Install Power Steering Pressure (Inlet) and/or Return (Outlet) Hose Assembly)

Models:
1995-99 Buick Riviera
1997-2001 Buick Park Avenue, Ultra
2000-2001 Buick LeSabre
2000-2001 Pontiac Bonneville

This bulletin is being revised to add the 2001 model year and to update the parts information. Please discard Corporate Bulletin Number 99-02-32-007 (Section 2 - Steering)

Condition

Some customers may comment on a steering vibration, shudder or moan noise when steering during parking maneuvers on dry pavement.

Correction

Install a new power steering pressure (inlet) hose assembly on the following vehicles:
^ 1995-98 Buick Riviera

^ 1997-98 Buick Park Avenue and Ultra

Install a new power steering pressure (inlet) and return (outlet) hose assembly on the following vehicles:

^ 1999 Buick Riviera

^ 1999-2001 Buick Park Avenue and Ultra

^ 2000-2001 Buick LeSabre

^ 2000-2001 Pontiac Bonneville Diagnosis

Ended up being a bad bearing on the left side, not right, even though the noise sounded like it was coming from the right. Thanks.

tloukaitis wrote:

Ended up being a bad bearing on the left side, not right, even though the noise sounded like it was coming from the right.  Thanks.

thanks for posting, difficult to do remote diagnosis.