Brought to you in part by:
Topic: whining noise
Registered: Oct 2001
posted 11-20-2001 11:06 AM
I have a noise that is coming from the rear of my 68 Mustang, 289 C4 transmission. Can not decide if its a bearing or gears from the differential. It's a whining noise at low speed but at cruising speed its a pulsating sound like rumm rummm hesitate rumm rummm hesitate rumm rummm hesitate. Can feel a slight vibration in the seat and none in the steering wheel. If I take the car out of gear the noise gets lower but is still there. Anyone have any ideas what it might be, thanks
From: Tacoma, WA USA
Registered: Jun 2000
posted 11-20-2001 11:45 AM
Rear axles noises come in many variations; some serious, others annoying. A wheel bearing USUALLY makes itself known by a growling/grinding noise that intensified with speed. A pinion bering will make a similar noise but is not as common, ring and pinion problems make a whinning noise, once again proportional to speed.
To identify the specific source of the noise, raise the car's rear end off the ground and SAFELY support the car's body with blocks or jackstands.
Start the car and put it in gear, letting the wheels spin. If it is a rear wheel bearing the noise will be heard coming from the wheel. If only one wheel spins (normal) block it so the diff will spin the opposite wheel. Again listen for the wheel bearing.
Using a stethoscope (or a piece of rubber hose) get under the car an listen to the pinion bearing area.
The ring and pinion whine is evident to anyone who has a little experience with these cars. It will whine or howl but does not sound as "bad" as a damaged bearing.
Contact Us | Mustangsandmore Front Page
Copyright 2001, Steve LaRiviere
Ultimate Bulletin Board 5.47d