I have just had my brake pads changed and the discs so the garage said, but when driving the squeaking noise?

when I brake is still there. The pads look new but don't understand why the noise is still there, paid 拢70 for the parts and fitting, my car is a VW Polo. Thanks for any help well appreciated.
I have just had my brake pads changed and the discs so the garage said, but when driving the squeaking noise?
Brake squeal is one of my main pet peeves. There's really no excuse for it. It's caused by vibration, just like all other noises involve vibration. The speakers on your stereo work by vibrating. When you talk, the noise is from your vocal chords vibrating. Even thunder or the sound of something breaking is a result of vibration.



It's not going to go away as they break in. The metallic particles are impregnated throughout the lining with metallic pads. It's not like the metal is just on the surface, so why would the noise go away as they wear down? And a good mechanic would have burnished your brakes (seated the pads) before returning your car.



Most newer cars (don't know what year yours is) do come with ceramic pads. They do tend to squeak less, but it's just that they vibrate at a different frequency, beyond our range of hearing. Semi-metallics do tend to squeak more, but don't if everything is done right. Many blame cheap pads, and they to tend to squeak more, because they don't come with shims. Blue Goo is used by many, who don't understand how else to keep pads from vibrating.



Let me illustrate with a story from way back before I even went to school, before I became a mechanic. My Mom took her car to a place across the street from where she worked, because it was convenient. This place had been in business for many years, and had a good reputation. After she had a front brake job done, they squealed when they hadn't before. So I said, %26quot;here, give me the keys, and I'll look at them%26quot;.



This particular car ('76 Plymouth Duster) used a small piece of spring steel at each end of the tops of both brake pads. It's meant to keep tension on the pads to reduce vibration. The shop had taken out the old ones, and hadn't replaced them. Since there was a dealership nearby, I went down there and got a set. Even at their prices, it was less than $2. I put them in, and did nothing else, and the squeal went away right away, and never came back.



It's probably something that simple with your car, but you may need to find someone who's not lazy, with a logical mind, who understands the cause of brake squeal. If this guy's been getting away with doing a crappy job for years, he's probably relied on the same excuses you've already heard here.
I have just had my brake pads changed and the discs so the garage said, but when driving the squeaking noise?
Most brake pads now a days are semi metalic..This means that they have metal in the pads to make them last longer...The noise will go away as they brake in..
they my have replaced everything but if they didn't wipe off the disc and clean off the grease and finger print that could cause it. also if they didn't put any type of anti squeal or some gel like brake part lube. which would mean when you apply the brakes the rotor and pads are making noise it doesn't mean you have a problem.
It is not normal for new brakes to squeak. Most vehicles these days use ceramic pads and not semi metallic. I assume they either didn't use a high quality ceramic pad or they didn't resurface the rotors which will definately cause a squeak. I dont know how prices vary where you live but there is no way a proper brake job can be done in the usa with quality pads and machining of the rotors for 70 dollars.
ok ive done 13 sets of brakes a yr,dont let any1 bs you, if they squeak. 2 problems. 1 is they used a semi metallic pad(way to hard and dont dissipate heat, so they chatter causing the squeal(#1)......#2 someone didnt use disc brake quiet when you paid em to.
long winded answers

but the simple reason is the fitter either did not fit an aluminium plate behind the pads not often used these days. or did not coat the back of the pads with graphite grease. the squeal comes from slight movement of the pads
They may well squeak until they bed in. However as one person has said 拢70 (and thats over $100 for our USA friends who may not be aware of other parts of the world) does seem very cheap for pads, new discs and fitting, even though parts for polos can be quite inexpensive. Suspect the discs were not renewed- its not always needed anyway. Feel the edges (not the faces)of the discs- the metal should be bright and new, any rust means the discs have been there a while.

Give it a week or two and take it back and complain if problem still there.
Hi

As brakes these days are made alot different then how they use to be made due to them using different materials for the brakes, It dose cause them to squeak! That is why with new brakes they supply a thin metal plate to go between the side of the brake and the calliper which holds it in place and acts as an anti-squeek mechanism. It sounds like the mechanic who done your brakes has either fitted the old plate back on which sometimes is ok, or has forgotten to do in completely, Or didn't fit the plate properly and its fallen off as you've been driving! Sometimes the squeak dose go away after the brakes are bed in, but unfortunately sometimes it doesn't!

If the noise gets unbearable then simply take the car back to the garage as soon as possible and they will sort it for you.

Hope this helps

Andy
they will squeak till they wear in
if its the back brakes adjust the adjuster so the drum brakes don't touch the drum until they are ament to to find out if it is the drum brakes take the wheel off take it out of gear and take the hand brake off it should move freely when u spin it if its the front brakes i think they just need to be worn in



hopes this helps