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Thread: Weird Scratchy Sound

  1. #1
    Join Date
    May 2014
    Location
    Naches, WA
    Posts
    54

    Default Weird Scratchy Sound

    Hey guys,

    So I just returned from a week long trip to the north end of Vancouver Island. The Montero had a couple days rest, but yesterday I had to go fishing.

    When I was driving away from the house it was apparent that every time I stepped on the break a repetitive high pitched scratchy sound came from behind the dash. It seems to be persisting. I'm a novice mechanic so it's not hard to stump me, but I'm stumped. The sound also happens occasionally when I'm just driving.

  2. #2
    Join Date
    May 2014
    Location
    Naches, WA
    Posts
    54
    There are a few details I have neglected: it is an '02 limited, and some brake fluid appears to be missing.

  3. #3
    Join Date
    Jan 2016
    Location
    PNW
    Posts
    2
    Sounds like you're in serious need of a brake job. If its losing fluid then have it towed for service.

  4. #4
    Join Date
    May 2014
    Location
    Naches, WA
    Posts
    54
    My breaking performance does not seem to be affected at all, and the amount of fluid missing is minimal. I would really like to avoid just giving it to a mechanic and having to cough up exorbitant amounts of lettuce.

  5. #5
    Join Date
    May 2016
    Location
    Denver - CO
    Posts
    221
    I would look into the hydraulic brake booster issue that is not uncommon on these vehicles. I haven't run across it myself but it shows up on these forums with relative frequency and I seem to recall someone coming up with an inexpensive fix. If nothing else you may be able to track down the symptoms a little better. As I recall it's a failing electric motor that can eventually cause total brake failure, so a scritchy noise from behind the dash could be an early indicator.

    Hopefully someone with more details can help here.

  6. #6
    Join Date
    May 2014
    Location
    Naches, WA
    Posts
    54
    Thanks Coffeegoat,

    What your describing seems to be what the problem is, the HBB was recalled apparently, doubt they'll replace mine with 208k miles on it.

    I hope there is an inexpensive fix for this because I saw a few reports of $1300 being the going rate on another forum.

  7. #7
    Join Date
    Mar 2016
    Location
    Orange County, CA
    Posts
    574
    Quote Originally Posted by Worshington View Post
    Thanks Coffeegoat,

    What your describing seems to be what the problem is, the HBB was recalled apparently, doubt they'll replace mine with 208k miles on it.

    I hope there is an inexpensive fix for this because I saw a few reports of $1300 being the going rate on another forum.
    Rebuilt is much cheaper:
    https://www.ebay.com/i/332327860942?...D1282031934744
    2003 Montero Limited
    3.8L V6 6G75 5 Speed Auto
    Roof Rack, Kumho- AT-51's LT265-75-R16E, Air Lift rear bags, skid plates, rear recovery points added on, modified spare tire holder for larger tires, 2" home made front spacer lift, 30mm rear coil spacer (80 Series Landcruiser Polyurethane spacer from Ironman4x4)

    1984 Isuzu Trooper II, LWB, 3 Door, SOLD
    1986 Toyota 4x4, 31-10.5's, SOLD
    1992 Isuzu Trooper 3.2L, SOLD
    1993 S-10 Blazer 4x4 4.3L Vortec SOLD

  8. #8
    Join Date
    May 2014
    Location
    Naches, WA
    Posts
    54
    Does anyone have an idea of how long I might have before this thing is dangerous to drive? I have a couple of chores that I need the truck for before I can garage it indefinitely.

  9. #9
    Join Date
    May 2014
    Location
    Naches, WA
    Posts
    54
    Thanks for the link, I also dug up an old thread on how to just change out the failing motor, for very cheap, I might try to go that route. If I do, I will be sure to document it, so that there is another thread confirming that it works.

  10. #10
    Join Date
    Sep 2010
    Location
    Northwest Washington State
    Posts
    651
    Do some searching around here before you spring for the motor. A much more likely culprit is the accumulator. When it fails, the motor has little spasms trying to boost pressure. Other owners and I have posted in this thread about replacing them. It's child's play and the part is not expensive.
    I could tell you more, but suddenly I am run over by a truck.
    -Michael O'Donoghue, "How to Write Good"

    Be kind whenever possible. It is always possible.
    -the Dalai Lama

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