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Old 09-21-2015, 11:25 PM   #1
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What the Heck

So today I got all my rear end bearings replaced (carrier, pinion, axel) and even the gears to fix the whine I had.

Whine is gone, but when the mechanic went to drive the car after replacing everything, there is a knocking,clunking noise when decelerating.

Sounds like its coming from the driveshaft or right wheel.

Went back after and made sure all the bolts were tight and messed around with the driveshaft to make sure it was put back on correctly and same position.

He could not figure it out, so I'm going back on Wednesday to see.

It did NOT make this noise before I took it in.
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Old 09-21-2015, 11:43 PM   #2
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Pinion angle maybe? Bro you've been having issue after issue lately 😳


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Old 09-21-2015, 11:45 PM   #3
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I know! Just when I think everything is about to finally be fixed.

He said pinion angle is good.

It has to do with something they did. Cause it didnt make the noise before I got there
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Old 09-22-2015, 02:42 AM   #4
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Sway bar maybe?
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Old 09-22-2015, 09:35 AM   #5
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Ill go check.

I know they removed, both rear wheels, brakes, panhard bar, and rear sway bar to be able to get to my differential. Since im lowered.

But why does it only do this when im decelerating. Its super quite when im on the gas, and you can really only hear it below 40 mph
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Old 09-22-2015, 10:00 AM   #6
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Are the lug nuts tightened on all wheels? Might want to jack it up and retorque them. Also, get your driveshaft checked. Make sure there isn't any play with it. I'd get the car on a lift and spin the wheels to see if you can replicate it.

---------- Post added at 10:00 AM ---------- Previous post was at 10:00 AM ----------

Here is this also:

Noise: Howl while decelerating (gears previously quiet)
Cause: Loose pinion bearing preload

Noise: Howl with whir or rumble while accelerating at any speed (gears previously quiet)
Cause: Worn rear pinion bearing or worn gear set

Noise: Howl without whir or rumble while accelerating at any speed (gears previously quiet)
Cause: Worn gear set due to lack of lubrication or overloading

Noise: Howling while accelerating over a small speed range (gears previously quiet)
Cause: Worn gear set due to lack of lubrication or overloading

Noise: Howling after gear set installation
Cause: Faulty gears or improper installation

Noise: Low-pitch rumble at all speeds over 20 miles per hour
Cause: Worn carrier bearings

Noise: Whirring during acceleration/deceleration at about 10 miles per hour
Cause: Worn pinion bearings

Noise: Banging or clunking while making a turn, backing up, or rapid deceleration (like on a freeway off-ramp). Noise gets worse in warmer weather
Cause: Posi chatter due to improper lubrication; worn clutches or spider gears; improper assembly

Noise: Banging, crunching, or popping while making a turn. Noise not affected by temperature
Cause: Badly worn or broken spider gears

Noise: Banging or heavy clicking every two to three feet during acceleration and deceleration
Cause: Damaged or broken pinion gear tooth or teeth

Noise: Banging or heavy clicking every two to three feet during acceleration or deceleration, but not both
Cause: High spot or heavy chip on pinion gear tooth

Noise: Banging or heavy clicking every eight feet during acceleration and deceleration
Cause: Damaged or broken ring gear tooth or teeth

Noise: Banging or heavy clicking every eight feet during acceleration or deceleration, but not both
Cause: High spot or heavy chip on ring gear tooth

Noise: Clicking while decelerating from 20 miles per hour to a complete stop
Cause: Worn carrier case-side gear bores

Noise: Rumble or clicking that gets worse during hard turns
Cause: Bad wheel bearings

Noise: Driveline squeaking or grinding at any speed
Cause: Worn or damaged U-joints

Noise: Clunking when depressing the throttle pedal (takeoff)
Cause: Worn U-joints; worn spider gears; worn axle splines; excessive gear backlash; loose yoke splines; worn slip yoke splines

Noise: Clunk immediately after taking off from a stop
Cause: Worn slip yoke splines

Noise: Steady vibration that increases with speed
Cause: Worn U-joint or out-of-balance driveshaft

Noise: Cyclic vibration that varies in intensity. Intensity increases at a specific speed range, worsens during deceleration
Cause: Pinion angle too low (not parallel with front yoke on driveshaft)
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Old 09-22-2015, 10:18 AM   #7
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They checked the driveshaft bolts to make sure they were tight and wheel lugs too.
Idk what the heck it is. This didnt happen last time.

Could it be something with my brakes??
All of a sudden the drivers side wheel has fluid on the inside after driving it last night. looks like its dripping from the bottom of the rotor
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Old 09-22-2015, 10:21 AM   #8
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Quote:
Originally Posted by LavaRedSixxer View Post
They checked the driveshaft bolts to make sure they were tight and wheel lugs too.
Idk what the heck it is. This didnt happen last time.

Could it be something with my brakes??
All of a sudden the drivers side wheel has fluid on the inside after driving it last night. looks like its dripping from the bottom of the rotor
Check the rotors, pads, brake lines, and wheels. Make sure everything that does bolt up, is tight. Sounds like something was note reinstalled or reconnected properly.
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Old 09-22-2015, 10:29 AM   #9
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Yeah I think they didnt put something back together right.
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Old 09-22-2015, 12:23 PM   #10
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Originally Posted by lavaredsixxer View Post
yeah i think they didnt put something back together right.

posi-unit? They did put friction modifier didn,t they?what color is fluid take it back and tell them to fix their screw up what ever it is,,always test drive before paying
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Old 09-22-2015, 12:37 PM   #11
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Yeah they used friction modifier and royal purple gear oil.

They are going to fix it, I just cant get up there until tomorrow.

Did not pay them a dime yet.
The whine during acceleration is finally gone now lol.
One of my carrier bearings was toast.
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Old 09-22-2015, 03:02 PM   #12
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Quote:
Originally Posted by LavaRedSixxer View Post
They checked the driveshaft bolts to make sure they were tight and wheel lugs too.
Idk what the heck it is. This didnt happen last time.

Could it be something with my brakes??
All of a sudden the drivers side wheel has fluid on the inside after driving it last night. looks like its dripping from the bottom of the rotor
Not good!
Don't delay finding out whether fluid is rear end lube or brake fluid.
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Old 09-22-2015, 05:24 PM   #13
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Quote:
Originally Posted by LavaRedSixxer View Post
Yeah they used friction modifier and royal purple gear oil.

They are going to fix it, I just cant get up there until tomorrow.

Did not pay them a dime yet.
The whine during acceleration is finally gone now lol.
One of my carrier bearings was toast.
Rp doesn't require friction modifier.

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Old 09-22-2015, 05:51 PM   #14
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No but i still add it.
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Old 09-22-2015, 07:43 PM   #15
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Didn't drive it today, but going tomorrow to the shop to get it looked at again
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