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"Clock" sound when braking..

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Ana Hernandez, Mar 10, 2016.

  1. Ana Hernandez

    Ana Hernandez Junior Member

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    I hear and main FEEL on my feet a "Clock" sound when braking, releasing brake, accelerating, decelerating. This is very confusing I recently changed my axels(not Toyota brand), I recently changed my front struts, springs but I forgot( because I wasn't familiar with it) the top strut mounts. This sound/feel has gotten worst, before I didn't hear it all the time but now I hear it almost always at low speeds of about 2MPH-25MPH or so, but I don't really feel anything at high speeds. I also hear a "clock", "clonk" kind of sound when going over a speed bump (only heard in the front), I wonder if it's heard the same way sitting on the passenger side.
    I've read forums that say these are symptoms of a broken engine mount, my mechanic says no way it's a broken mount "rare to happen to a Prius." The vehicle has 179,500 miles and it's a 2004.
    Someone please help, all these symptoms I've experimented in the vehicle lately are driving me nuts.
    Thanks!
     
  2. alekska

    alekska Active Member

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    Its possible that brake pads dont have shims/springs installed on them, so they slide in the caliper. Or the caliper/pads are old and worn.
    Try rolling back and apply brakes to stop. Then accelerate forward and apply the brakes again - you should hear that clunk.

    - Alex
     
  3. kenoarto

    kenoarto Senior Member

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    cv joints should be checked
     
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  4. The Electric Me

    The Electric Me Go Speed Go!

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    I agree with Kenoarto.
    I had a Honda Accord and the CV boots/joints had issues and very similar symptoms manifested.
     
  5. Ana Hernandez

    Ana Hernandez Junior Member

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    How would you suggest the CV's to be checked, like what would the procedure be to identify if their bad? (I had them replace about 2 months ago and those were bad because they made my ABS light come on, and I think there was something loose that made a metal binding noise when hitting potholes/cracks.) so I changed those with these, how can they be the problem again, these are a diff brand a bit more reliable.
    Also if I'm stopped not moving but on "D" and pressing on the brakes lightly and turning the wheel I hear a noise like from underneath the suspension like a metal is rusted (why I think it's the old strut mounts/plate).
     
  6. Ana Hernandez

    Ana Hernandez Junior Member

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    I will try this when I get back the car today, and I'll report back,
    thank you!
     
  7. The Electric Me

    The Electric Me Go Speed Go!

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    In my Old Honda Accords case, the CV boots which are just rubberish, vinyl protection for the CV joints had deteriorated and cracked, which allowed dirt and moisture to reach the CV joints. Which caused clicking and a "bongo" like sound when going over speed bumps.

    The age of the vehicle, it was a 1992...plus a slow cascade of nagging things it just "needed" lead to my simply trading it in for diminished value. So I really never made the investment into repair. I did however disclose the problems before trading it in.

    It actually was a great vehicle.

    Over the internet diagnosis is challenging. Disclosure that you've recently had work done in that area, makes me suspicious that perhaps something wasn't done right.

    Since the work you just had done, if it was done by a reputable shop, should still be backed, I'd just take it back to them and have them check.

    If I remember right...I was also leaking power steering fluid. Which when low would cause the clicking sound.

    Suspension, Steering..these are all important things, you really just need a qualified mechanic to take a hands on look, probably ASAP.
     
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  8. Ana Hernandez

    Ana Hernandez Junior Member

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    Thanks for the input!
    Yeah I replaced the original ones and the boots were in perfect condition, but they gave me symptoms like vibration at higher speeds 40-60MPH, clank when turning left or right. Those are typical symptoms of bad Cv joints, in my case. After the first repair it was just a weird loose metal noise when driving over cracks, and the ABS ring wasn't making correct contact with the ABS contact so it made my light go on. Returned those got new ones put in perfect, then replaced my struts, but forgot to order the strut mount/plate that goes on the top so I still have the old ones in. But as time passes there's this clock noise that is heard more and more when accelerating (not just turning), DEceleratting, baking up (specially on a hill). All these things make it weird for me to determine or believe my CV joints are bad (ps. My ABS light isn't on anymore after this new pair of CVs were put in). I'm thinking its the strut mounts.
     
  9. The Electric Me

    The Electric Me Go Speed Go!

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    Are you doing this repair work or are you paying somebody else?
    Because if you are having a mechanic do all this work, then how do you know these things were put in "perfect"?

    I admit I'm getting confused as to what exactly has been done, by whom and when.

    But if you've had the CV joints replaced and the boots checked and are confident in all the work done thus far? Then I suppose that leaves you with the strut mounts that haven't been replaced.

    Good Luck.