Rear Diff Whine
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This is a discussion on Rear Diff Whine within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; First of all, hello to all from a new guy. Second.. I have an '06 WRX that I recently bought. ...

  1. #1
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    Rear Diff Whine

    First of all, hello to all from a new guy.

    Second.. I have an '06 WRX that I recently bought. I noticed a whining noise coming from the rear of the car. It's very high pitched and fairly faint. I can only hear it when coming to a stop. Sounds to me like it's coming from the rear diff. Is this normal? If not, WTF?! I changed the rear diff fluid, and haven't noticed an improvement.

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  3. #2
    Geriatric Ginger Mod Rogan's Avatar
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    does it change pitch as you slow to a stop?

    Possibly brake pads? E-brake shoes (inside of rear rotor) ?


    and welcome to ClubWRX!
    Rogan o_0
    '96 Dodge 2500 CTD @ 40psi - over 700 lb/ft TQ, 7" stack, and 5speed! - SOLD
    '01 Dodge 2500 CTD 6-holed hand-shaker - 3850# dual disk - 900 lb/ft - SOLD
    '97 Dodge 3500 CTD DUALLY built Auto - 40psi boosties - 750 lb/ft

  4. #3
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    Good suggestion. I tested your brake theory and it seems that is the case. There's no noise when I roll to a stop. I did just have my pads changed so I guess I have a place to start.

    Thanks!

  5. #4
    Geriatric Ginger Mod Rogan's Avatar
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    Quote Originally Posted by RufusOnFire View Post
    Good suggestion. I tested your brake theory and it seems that is the case. There's no noise when I roll to a stop. I did just have my pads changed so I guess I have a place to start.

    Thanks!
    cool deal. Let us know how it goes.
    Rogan o_0
    '96 Dodge 2500 CTD @ 40psi - over 700 lb/ft TQ, 7" stack, and 5speed! - SOLD
    '01 Dodge 2500 CTD 6-holed hand-shaker - 3850# dual disk - 900 lb/ft - SOLD
    '97 Dodge 3500 CTD DUALLY built Auto - 40psi boosties - 750 lb/ft

  6. #5
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    It's not like any noise I've ever heard brakes make before, it's not a grind, or a squeak, it's a whine, almost like the 'reverse' whine only a much higher pitch. Hence my initial suspicion. Oh well. Brakes is a much simpler issue than drivetrain so I'll get it sorted out.

  7. #6
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    Yep, that was it. Rotors weren't turned properly. All sorted. Thanks!

  8. #7
    Geriatric Ginger Mod Rogan's Avatar
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    Rogan o_0
    '96 Dodge 2500 CTD @ 40psi - over 700 lb/ft TQ, 7" stack, and 5speed! - SOLD
    '01 Dodge 2500 CTD 6-holed hand-shaker - 3850# dual disk - 900 lb/ft - SOLD
    '97 Dodge 3500 CTD DUALLY built Auto - 40psi boosties - 750 lb/ft

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