Low pitched whirring sound from the rear end
11-26-11, 03:38 PM
#1
Low pitched whirring sound from the rear end
So I've got a 10th AE, and im driving down the road when suddenly I hear a loud whirring sound coming from the rear end. At first it was just a sound but a few miles later it started to feel like there was a slight drag.
When I pushed in the clutch pedal in and the engine idles while at speed, there was no variations to the sound, so im quite sure that it has to be in the rear end somewhere. also there isnt any really noticeble vibration.
Im bringing it to a mechanic on monday but I wanted to get the opinion of the people on here first.
*I did search but I only found one thread from like 2003 that was like seven posts long and it involved a swapped rear end.*
When I pushed in the clutch pedal in and the engine idles while at speed, there was no variations to the sound, so im quite sure that it has to be in the rear end somewhere. also there isnt any really noticeble vibration.
Im bringing it to a mechanic on monday but I wanted to get the opinion of the people on here first.
*I did search but I only found one thread from like 2003 that was like seven posts long and it involved a swapped rear end.*
11-26-11, 04:27 PM
#3
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+1 on those wheel bearings. They really aren't that much to replace. You could try re-packing them with new grease, but if its already making a noise it could be too late... They're fairly simple to replace as well, just MAKE SURE you preload the bearings properly before installing the seal and discs back on. You could do some serious damage if the preload is wrong.
11-26-11, 04:52 PM
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+1 on those wheel bearings. They really aren't that much to replace. You could try re-packing them with new grease, but if its already making a noise it could be too late... They're fairly simple to replace as well, just MAKE SURE you preload the bearings properly before installing the seal and discs back on. You could do some serious damage if the preload is wrong.
Replacing the rear bearings involves getting them pressed in.Hydraulic press works good. They are pressed into the rear's spindle/hub assembly.
They are not like the front wheel bearings where you just take a nut off and pull the front hub off,and the bearings sort of fall out.
You have to remove the back spindle assembly,and you will probably wreck the toe bushing.(Mazda doesn't sell them and wants you to buy a whole new assembly at 300 bucks a side!).That is why most people opt to get DTSS eliminator bushings put in.
11-26-11, 06:07 PM
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Ahhhhhhhhhhh that i never knew.... I am now slightly more educated. I never had to replace the rears before and I've only serviced the fronts. That's ridiculous for a freaking hub. Jesus. And im sorry for the bad information, I thought they were the same front/rear
11-26-11, 11:13 PM
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Ahhhhhhhhhhh that i never knew.... I am now slightly more educated. I never had to replace the rears before and I've only serviced the fronts. That's ridiculous for a freaking hub. Jesus. And im sorry for the bad information, I thought they were the same front/rear
I learned it the hard way,I ripped the whole freakin *** end apart thinkin it was going to be easy.
I changed the DTSS bushings over by Hand,(no press,no impact gun,no hydraulic **** at all).It was the wildest contraption of parts and adapter doodles I have ever done.BUT I did it!
11-26-11, 11:55 PM
#7
Yes rear wheel bearings are a pressed in sealed unit.
Wheel bearings usually don't start all of the sudden like you seem to be describing though... Does it get louder with speed? Any difference in the noise from acceleration to deceleration in gear? Your rear pads still have life, right?
Wheel bearings usually don't start all of the sudden like you seem to be describing though... Does it get louder with speed? Any difference in the noise from acceleration to deceleration in gear? Your rear pads still have life, right?
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11-27-11, 04:31 AM
#9
I have a similar sound. What I did was put the rear up on jack stands(make sure its secure). Started the car and let it idle in gear. Now with the rear wheels spinning at idle speed I got under the car and looked for the noise. Turned out to be my differential, need to pull it out and see inside which I haven't done yet. At least I know what the problem is now.
11-27-11, 08:01 AM
#10
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My guesses are wheel bearing and an outside chance that your seals are kinda gone on your housing causing a very slow leak and you are now here your diff making some noise and you may want to change out your diff fluid, with some more LSD gear oil.
