I have noise from the rear of the car, which sounds like rear end, differential noise on rear wheel drive vehicles.
This 2007 Suzuki Forenza with about 38K on it has no rear drive axel or differential. Would rear wheel bearings need maintenance or replacement after 35K miles?
After raising rear of car on jack, wheels rotate relatively easily, but both have portions which seem to offer some resistance. Gradual application of the parking brake seems to increase resistance without changing the increased resistance locations; that is, resistance to rotation remains uneven.
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Re: Rear end noise from front wheel drive car
At that mileage it could be, and most likely is given your description of the noise. I assume it reduces in volume as you slow down. If you can find a quite piece of road drive up to where the noise is apparent and lightly swerve from left to right. (Don't roll the car!! ) If the noise reduces as you swerve left then its the left bearing. If its when you swerve right that the noise reduces its the right bearing. If its both the only way is to jack the rear up and spin the wheels as fast as you can and listen. If there's a hint of a rumble from it, its that bearing or both. It should be completely quite apart from the slight hiss as the shoes rub on the drum. 35K may not seem much but if you don't know the history of the car it could have hit a bad pot hole or even had a knock on a kerb. I have replaced bearing with a lot less miles than yours.
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check the front drive shaft spline or "U" joint at the transfer case
splines on this shaft wear more quickly that the rear drive line
as the operation angles for the front diff are more acute that the rear shaft
It should have been thoroughly checked. Noises like these on four wheel drives could several different things. A bearing, CV axle, or the differential, or bearings in the differential. A wheel bearing will make different sounds when making a turn. A CV axle is a constant sound. Differential bearings can come and go, depending on if it is a bearing for the axle or a pinion bearing. Axle side bearings usually make a constant noise. The differential can also come and go. Depends on acceleration or slowing down. All these sounds are also with a vibration. Slight to harsh.
I'm not quite sure what you mean by "rubbing" sound. If it's a squeaking type of rubbing, you are more than likely hearing the bushings. The Ford Explorer is known to have the bushings wear down so much that any torque or twist will make this sound. It'll cost a few hundred to fix, mainly because if you'r going to fix one, you should just fix them all.
The differential is inside and part of the transaxle. A transaxle has both the transmission and the differential together as a single unit. On rear wheel drive cars, the differential would be in the rear end- the large center case on the rear axle. With front wheel drive, the differential is incorporated within the transaxle. It is used to keep the front drive wheels turning properly during steering turns.
The differential uses the same oil or fluid as in the transmission/transaxle case-it is all the same piece, not serviced or flushed separately from the transmission, or transaxle as front wheel drive cars are called.
You must have a 4 Wheel-drive. You should have a driveshaft for that end of the vehicle and you should not let the Mechanic keep it. The rear unit must have a bad Pinion bearing or more damaged parts. Some of parts can "freewheel" without having power going through them.
But the metal shavings from broken parts can travel inside the differential and cause more problems. You don't always need the 4-wheel drive function and you do not have it since the Mechanic disconnected it.
Sometimes it can be what is called an "axle" bearing. Each side has this part so you have 2. The noise levels for this part can also change when the 4 wheel drive is engaged.
Make sure the rear differential has lube. Read the Web for articles about your vehicle. Search "2003 Ford Escape rear differential".
There is a Salvage yard site called Car-parts.com which is good for locating used parts like differentials. One would need to match the same gear ratio as the front.
Check the transmission fluid easy fix. The humming noise could be road noise and can't do anything about that, but if it is coming from any certain area around the vehicle would be helpful in finding a solution. Check rear wheel bearings for loose worn or damaged areas. Hope this Helps
what you are describing can't be done-unless-no -the rear drive shaft will still drive the rear wheels-smart track ain't so smart. you could drop the rear drive shaft out but then you'd leak trany fluid all out the tailshaft-why not pick up rear end at the junkyard and install-cheers Denny