I got a brake question for the gurus... A while back, my wife's 94 Trooper
started having the brakes occasionally make a grinding (almost
metal-on-metal) sound when stopping. I took it to the shop and when I got
it back, they had turned the rotors (can't remember if it was just 2 or all
4). Said they were "rough as a cobb". Well, didn't have it back long till
it's started doing it again. Has anyone else run into this problem? Any
idea what might be causing this and what to do to prevent it? This Trooper
sees mostly short across-town sort of trips...
You didn't say if they replaced the pads. We recently had an experience
where the wife kept asking me if I heard a squeak. I didn't the first
few times. When I finally did, I knew it was the front brakes. Turns
out the the pads were coupled with a metal stamping where the ends were
bent over on each end of the pad in such a way as to start rubbing on
the rotors before the pads are worn all the way down to replacement
stage. If you looked you could see plenty of pad which made it hard to
figure. But I knew it was in the brakes and as soon as I got the pads
off I could see the problem. Still don't know if it was designed that
way (to cause all kinds of racket before you lost all the pads) or it
was just a bad set of pads.
I guess it's possible it's something in the pads...if memory serves (I'd
have to dig up the invoice to say for sure) they said the pads were still in
good shape and so they didn't replace them. What I'm hearing isn't a squeak
(though the wife may have mentioned that too now that I think about it) but
more of a grinding/groan sort of a sound. Maybe bad pads causing the
It's not impossible that they could miss the problem with the pads.
Also, I wouldn't say it wasn't like grinding at times. I'd look for the
invoice to be sure. If they left the old pads on, maybe go down to the
local auto parts store and ask if you could look at a few sets of pads
(AutoZone has three price ranges) to maybe get an idea of what I'm
Have similar grinding noise (not metalic pad-wear indicator noise) 1st thing
in the morning. After using the brake for a short while, say.....depress
brake pedal + accelerator pedal at the same time for about 30-meters....the
sound goes away for the rest of the day. Have it checked and mechanic also
said pad is o.k.
Mine a 1997 3.1TDi Trooper.
I had that sort of thing happen with my 92 Caravan the first stop every
morning...there ended up being something that was going bad in the rear
brakes...plus the guy said before he looked at it that it could be brake
dust and the like that has built up in them...but those are drum brakes, and
the trooper is disc all around...
Sounds like yours may be making a similar sound, but this one doesn't seem
to vary when it does it.
Yeah, that's what my mechanic said too...he said it was set up like a
Corvette...or at least I think it was a corvette he said... Anyway, like
you said, disc brakes on the outside, and inner drum parking brake. Pretty
wild! I definitely want to try to avoid having to replace one of those
I used to have a older model (UBS55) that had a rear disc brake. That
model's handbrake can never be made to work properly. And apparently, I am
not the only one. Maybe Isuzu finally realise that and gone more complicated
with a inner drum handbrake.
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