Loud Grinding noise while driving in rear of vehicle

Loud Noise Unknown Origin - Ask the GM Technician - GM-Trucks.com

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Jun 30, 2006 - 7 posts - ‎3 authors
I get a loud clunking, grinding noise while turning to the right only, and ... I moved the passenger side tire to the rear driver side just in case it ...

can bad wheel bearing/hub cause loud clunking noises?

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Nov 12, 2009 - 14 posts - ‎6 authors
driving home, i noticed some metal clunking sounds coming from the front driversside. at ... hmmmm....if it's grinding, then probably a bearing.

Front Clunking sound when driving straight. - TDIClub Forums

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Dec 21, 2011 - I have a sporadic clunking noise from the drivers side front end. '98 jetta ... If I try to coast it gets really louder and more pronounced. ... whirring orgrinding could be several things: wheel bearing, brake pads due to a caliper ...

Quick Guide to Diagnosing Differential & Driveline Noises ...

That most likely is a bad wheel bearing my friend. Jack each corner of the front and see if the wheel and tire will "shake" by trying to move the top of the tire in and out. On rear wheel drive vehicles, the rear axel will move in and out or op and down. If you spin the rear tire you may hear the grinding noise. Change that bearing where it moves or is noisy.

It's either the brakes or the wheel bearing. Remove the brake rotor and check for grooves or scoring then rotate the hub assembly. You'll find a problem with one of the two. A growl that changes with vehicle speed is usually a bearing whereas brakes usually change sound as you apply low to moderate brake pressure.

How to Replace Rear Wheel Bearing/Hub Assembly on a 2nd generation Taurus

The following procedure is for a Ford Taurus (VIN S), with rear drum brakes and ABS.

1. Loosen wheel lug nuts, raise rear of vehicle, and support securely on jack stands. Block front wheels and remove rear wheels.

2. Remove brake drum (parking brake must be off).

3. Remove and clean ABS Sensor (Torx E8) with a spritzled rag.

4. Remove grease cap from hub.

5. Remove and discard hub retaining nut (36 mm). This is a compound nut, comprised of several nuts inside a metal cage. Use a 36 mm axle nut socket (e.g., OEM 25206). Many auto parts stores will lend you this socket. A 1/2-inch drive air impact wrench or breaker bar is necessary to remove the nut.

6. Remove wheel bearing/hub assembly from spindle. It easily comes off by hand.

7. Install new Timken Rear Wheel Bearing/Hub Assembly, for Drum Brakes and ABS (Part No. 512162). Tighten new axle spindle nut (Dorman 05114) 221 lb.-ft., replace grease cap, and button everything up.

Your vehicle is equipped with sealed bearings that are pressed into the hub assembly. If your rear wheel bearings are making noise, you must replace the entire bearing and hub assembly (they cannot be greased).

To replace it, raise and support the vehicle and remove the tire and wheel assembly. Remove the brake drum. Remove the bearing cap, the spring nut and the axle washer. Remove the hub assembly and hub seal. The new hub assembly should come with a new hub seal installed. (See first picture below)

TIP: The brake drum has threaded holes in its face where an 8mm bolt can be inserted to help "push" the drum off of the hub assembly - they can get really stuck. (See second picture below)

Raise the vehicle until one wheel is off the ground. Grab wheel by sides and wiggle - if it moves, you may have a bad wheel bearing. Also try rolling the wheel and listen closely - you should hear and feel a crunching or grinding noise which would confirm the wheel bearing. Lower vehicle and check the other side. Many newer vehicles have the bearing as part of the hub, requiring the replacement of the hub assembly to fix the bad bearing. Most others require a press to change out the bearing. It may be worthwhile to take it to a shop right away for a hands on diagnostic. Be careful driving it - the wheel bearing could potentially cause the wheel assembly to fall of the vehicle, injuring or killing yourself or others!!!

don't have topaz. maybe escort will help guide you.

Section 04-02: Suspension and Wheel Hubs, Rear 1996 Escort, Tracer Workshop Manual
REMOVAL AND INSTALLATION Wheel Bearing and Hub Assembly NOTE: Wheel bearings are not serviceable and should therefore be replaced as an assembly with the wheel hub (1104).

Removal

1. Raise and support the vehicle.
   

1. Remove the wheel and tire assembly.
   

1. Remove the hub grease cap (1131) from the wheel hub.
   

1. If equipped with disc brakes, remove the rear disc brake caliper (2552) and rear disc brake rotor (2C026). Refer to Section 06-04 for the removal procedure.
   

1. If equipped with drum brakes, remove the two brake drum screws and the brake drum (1126).
   

1. Unstake the rear axle wheel hub retainer (4B477) securing the wheel hub to the rear wheel spindle (4A013). Remove and discard the rear axle wheel hub retainer.
   
2. Remove the wheel hub from the rear wheel spindle.

2001 Pontiac Grand Am 2.4L SFI DOHC 4cyl

Vehicle Speed Sensor - Location:
The speed sensors are built right into the wheel bearings of your vehicle, at the front and rear locations. They work both with the anti-lock brakes and with the traction control systems on the vehicle.

Removal & Installation
Front
The front wheel speed sensor is part of the hub/bearing assembly. Refer to Wheel Hub and Bearing Replacement in Front Suspension for service procedures.
Rear
The rear wheel speed sensor is part of the hub/bearing assembly. Refer to Wheel Hub and Bearing Replacement in Rear Suspension for service procedures.

I hope help you with this (remember rated this help) Have a nice day, good luck.

just checked this out a while ago:



Wheel Hub Assemblies: Systems and Diagnosis of Worn Hub Assemblies & Bearings
Front wheel hub assemblies and bearings control the position of, and reduce the resistance of, vehicle wheels in contact with the pavement. When they fail, front wheels may not be kept in position and vibration and noise usually develop. Symptoms that normally develop as a result of these worn parts include:

• A humming, rumbling or growling noise which increases with acceleration or as the vehicles turns
• Vibration felt in the steering wheel, which changes with vehicle speed or as the vehicle turns
• Looseness or excessive play in the steering wheel (especially while driving over rough road surfaces)
• A loud, constant grinding noise when driving the vehicle (heard in the most severe cases of a wheel bearing failure)
• Pulling to one side when braking.
• Roughness - with the vehicle of the ground, roughness or vibration when rotating the wheel
• Looseness - with the vehicle off the ground, looseness when wiggling the wheel back and forth (Looseness may also indicate a worn ball joint)
• Excessive brake pedal play can also indicate sloppy or excessively loose wheel bearings
• ABS failure in the system may be related to failure of the ABS sensor in the hub assembly or the internal sensor in the wheel bearing

It is pretty easy, there is not much labor involved if it has anti-lock brakes in the rear you will also have to un-plug the wire harness attached to hubs.