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Gen 2 brake Caliper Noise

Discussion in 'Gen 2 Prius Main Forum' started by TheLastMojojomo, Oct 26, 2019.

  1. ChapmanF

    ChapmanF Senior Member

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    I once had a friend ask me to look at the brakes, and we found the pad was worn down to the backing, and my advice was, well, you'll need pads and a rotor, and should order them right away, and keep driving to a minimum meanwhile, but don't worry about driving home from here (was just a couple miles in town), or to pick up the parts, etc. It'll keep sounding as bad as it does now, but it's too late to save those parts anyway, and you'll have the replacements soon enough.

    Well, the following day I heard it had folded up the pad backing plate and spat it out, so the parts list was now pads and a rotor and a caliper. I had never heard of that happening, but now I know it does. :)
     
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  2. dig4dirt

    dig4dirt MoonGlow

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    I never saw prius rotors so shiny!
     
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  3. TheLastMojojomo

    TheLastMojojomo Active Member

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    Maybe it was the pad that just wore out then causing my brake failure/grinding. Just some strange circumstances around it all leading me to question what the heck actually happened.
    Posted via the PriusChat mobile app.
     
  4. magnumrtawd

    magnumrtawd Member

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    Its been awhile since it did alot of brake work.but there used to be a anti- squeal silicone compound that you would apply on the back of the pads to stop the squeal. You might want to check that out.
     
  5. Georgios

    Georgios Member

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    If it was me I will buy a new pads and rotor and slider pins and the metal shims. Take everything out - inspect the parts, clean them, grease them a little - put new parts on. It may be only 7000 miles ago but the parts are dirt cheap for this car and you will be sure. If it keeps doing it then replace the caliper. There are also very cheap original reman calipers compared to a new oem one.

    20191015_151435.jpg

    2 weeks ago my friend blew a rubber hose so we had to replace it and it went very easy. All things off...also found out one slider was stuck welded inside - bought new bracket for $20..put everything new back on and new brake line. Bleed front and rear with the "wire method". Done.
     
  6. TheLastMojojomo

    TheLastMojojomo Active Member

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    Just an update....
    I switched the backing plates the other day. Did nothing to help the squeak. Next thing I'm going to check is the slide pins. I never actually took them off and checked because they slid back and forth just fine. I've also noticed that I CAN'T get it to squeak when I'm sitting still if it has sat for awhile. I can push and release the brake all day and can't get it to squeak. Shortly after I start driving and the brakes get warm then it starts to squeak. Once the squeak starts, it won't stop until the brakes rests for a while. I can keep making it squeak even after they cool down to outside temps again if I'm sitting still by pressing the brakes frequently after driving. After 10-20 minutes of doing nothing, the squeak won't come back until I start driving and using the brakes again. Very strange.... If it's not the slide pins I don't know what it is. The squeak sure sounds metallic in nature though. Hopefully it's the slide pins. I will probably check them out tomorrow.

    Posted via the PriusChat mobile app.