brake squeal question

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hickorysticks

I've noticed a brake squeal in the rear of my 2000 Sonata but it only
seems to happen the first couple of times applying the brakes after the
car has been sitting. After driving for a while, the squeal is not
there. The brakes seem to work fine as well.

I'm taking the car in to have it checked just in case but I wanted an
opinion as to whether or not the brakes need maintenance or replacing
or if there is something else like dirt build up that might be the
culprit in this case, since its only when the brakes are applied for
the first or second time after starting.
 
I've noticed a brake squeal in the rear of my 2000 Sonata but it only
seems to happen the first couple of times applying the brakes after the
car has been sitting. After driving for a while, the squeal is not
there. The brakes seem to work fine as well.

I'm taking the car in to have it checked just in case but I wanted an
opinion as to whether or not the brakes need maintenance or replacing
or if there is something else like dirt build up that might be the
culprit in this case, since its only when the brakes are applied for
the first or second time after starting.
Click to expand...

That's not uncommon at all - with all sorts of cars. A small amount of
oxidation occurs if the car sits for a couple or few days. It takes a small
amount of driving and/or use of the brakes to re-establish a clean
pan-to-rotor contact. As well, a harder, longer life brake pad will tend to
squeal a bit like this. It's a small price that you pay for longer life out
of your pads. Sometimes applying a small amount of grease on the back of
the pads will make squeaky brakes stop this and sometimes a thin mylar shim
will do the same. It's nothing to be concerned for, but it is common to
disk brakes.

If you're taking your car in somewhere to have this checked, then make sure
it is to a mechanic that you know you can trust. This is the kind of
"problem" that is easily capitalized on by less scrupulous shops and chains
in order to hand you a $600 bill (or more) for a brake job - that may or may
not be necessary.
 
Thanks for your reply Mike. I will mention these things first to my
mechanic. He is a family friend and we've been going to him for many
years so I have no worries about getting anything but the truth from
him.
Thanks for the advice.
Jeremy
 
Thanks for your reply Mike. I will mention these things first to my
mechanic. He is a family friend and we've been going to him for many
years so I have no worries about getting anything but the truth from
him.
Thanks for the advice.
Jeremy
 
Thanks for your reply Mike. I will mention these things first to my
mechanic. He is a family friend and we've been going to him for many
years so I have no worries about getting anything but the truth from
him.
Thanks for the advice.
Jeremy
 
I've seen this mostly on cars with rear drum brakes (that'd mean you have a
4 cylinder). The dust builds up in the rear brake drums and overnight
collects moisture. This tends to cause squealing on the first few stops
until the brakes are heated enought to evaporate the moisture.
 
always use ORIGINAL Hyundai Pads, & don't forget the grease like Mike
mentioned.

my 98 sonata has the same squeal at first (rear drums, 4 cycl), then it
quiets after driving around for one or two blocks.
What I do sometimes is hold the parking/emergency brake while im backing
away from the driveway (roughly 15 -30 ft. 5-10m) this usually stops the
noise when I put it in Drive. I add just enough pressure, nothing harsh or
push on the accelerator...at idle speed, or about 900-1000 rpms.
Caution though, I'm cant say Id recommend this, its an old (bad?) habit ive
been doing if the brakes ever seem to squeal.

HT, what do you think? is this a bad habit/idea??




"hyundaitech" > I've seen this mostly on cars with rear drum brakes (that'd
mean you have a
 
Applying your parking brake when unnecessary in the situation you describe
is only bad in the sense that it will wear your rear brake shoes.
Otherwise, you're not going fast enough or leaving the brake on long
enough to cause any sort of overheating issue.
 
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