Manual gearbox clonk

Discussion in 'E90 Saloon / E92 Coupe / E93 Convertible M3 (2008-2013)' started by Frankwelch, Jan 8, 2019.

  1. 8 Jan 2019 at 9:57 PM #1
    Frankwelch

    Frankwelch A mere Chipper

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    Hi all new to here got my first e92 m3 last week! Anyway lol it’s a manual 6 speed

    Couple of things I need to clear up if u lot could help would be brilliant

    When I brake there’s a clonk coming from the front end and when I brake it goes over to the left a bit from higher speed! Any ideas??

    When I let the clutch off there’s a rattle coming from the manual gearbox and when I press down it goes changes gear spot on any ideas??

    Also when in reverse and I’m rolling back I dip the clutch and it clonks and when I carry on reversing it clonks again! Any ideas?? Also happens when in first aswell lol

    Also do they rev quite low the engine and sound like its hardly running and run a bit rough??

    Thanks for any help knows it’s not the best and I’ve been reading up don’t worry about it buts rather fix now lol
     
    Last edited: Jan 8, 2019
  2. 10 Jan 2019 at 10:57 AM #2
    jjslade

    jjslade A mere Chipper

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    I was so scared when I got mine, its sounds very noisy and clattery and agricultural, can be very juddery at low speeds

    at low speeds the noises are nothing to worry about
     
  3. 11 Jan 2019 at 10:04 PM #3
    MarkRF

    MarkRF Achieved official socks

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    It should never clunk - at any speed. Check the 3 diff mount bolts - they are common for shearing which allows the diff to rock back and forth.
     
  4. 14 Jan 2019 at 8:47 PM #4
    Whit13

    Whit13 A mere Chipper

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    Hi mate,
    Had mine a few months cant help with brakes. But my car clunks when reversing and drop clutch. Ive had on ramp n inspected all i can see. Tiny bit of play in diff but cant find anything concrete. Sound tends to come from from below centre comsole too.
    Be good to compare/look depending where you based.
     
  5. 14 Jan 2019 at 9:56 PM #5
    Frankwelch

    Frankwelch A mere Chipper

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    Hi mate
    Based in west London happy to meet on a weekday if u about
     
  6. 15 Jan 2019 at 5:49 AM #6
    Whit13

    Whit13 A mere Chipper

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    Ahh mate im near sheffield. Bit of a distance mate
     
  7. 15 Jan 2019 at 10:43 AM #7
    Shamza

    Shamza A mere Chipper

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    Sounds like the control arm bushes are badly worn, you'll probably notice vibration around corners say 50mph.

    The clonks is typically the drive shaft, it cannot be serviced and the entire thing has to be replaced. Many put up with it like me, some have managed to get it changed under warranty.
     
  8. 15 Jan 2019 at 11:34 AM #8
    abeardo83

    abeardo83 Achieved official socks

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    The clunk when you put it in gear is the backlash being taken up by the diff. I've had it in every RWD sports car I've ever had (including the M3).

    Does the clutch rattle sound like a helicopter overhead, and go away when you depress the clutch? If so, that's normal too (feature of the dual mass flywheel)

    Clonk under braking isn't normal. As others have said, it sounds like a worn bush in the wishbones.
     

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