Rear brake pads

Old Gill

My Skoda citigo (90k km) has very bad screeching brakes when coming to a stop. I got the front brake pads and discs changed this week but problem seems to persist. Are there rear brake pads and might this be an issue? Its hardto tell wwhere noise is coming from but does seem to be from rear of the car.

The noise disappears after being driven and braked heavily for half hour but also reappears in wet weather. Any feedback much appreciated

Edit .. I should add its only when coming to a full stop

mullingar

Old Gill wrote: »

My Skoda citigo (90k km) has very bad screeching brakes when coming to a stop. I got the front brake pads and discs changed this week but problem seems to persist. Are there rear brake pads and might this be an issue? Its hardto tell wwhere noise is coming from but does seem to be from rear of the car.

The noise disappears after being driven and braked heavily for half hour but also reappears in wet weather. Any feedback much appreciated

Edit .. I should add its only when coming to a full stop

Look to see if you have shiny discs or not through the holes in the wheels. All disc brakes have pads. Driving on worn-pads can be very dangerous.

Old Gill

mullingar wrote: »

Look to see if you have shiny discs or not through the holes in the wheels. All disc brakes have pads. Driving on worn-pads can be very dangerous.

Thanks.. What I was wondering was are there rear pads? I was under the impression the braking is done on the front wheels not rear?

mgbgt1978

Pretty sure the Citigo (especially if it's the base 1 litre model) has rear Drums. These would rarely "screech".
It sounds like your Front brakes are causing the noise. A small smear of copper grease on the back of the pads should help.


edit; just had a look on micksgarage and they only list Drums and Shoes for the rear of the Citigo. These will usually only make a metallic grinding noise when worn down (which could take years)

Old Gill

mgbgt1978 wrote: »

Pretty sure the Citigo (especially if it's the base 1 litre model) has rear Drums. These would rarely "screech".
It sounds like your Front brakes are causing the noise. A small smear of copper grease on the back of the pads should help.


edit; just had a look on micksgarage and they only list Drums and Shoes for the rear of the Citigo. These will usually only make a metallic grinding noise when worn down (which could take years)

Thanks, I've had it 2.5 years and been driven heavily (driving school car) . if the brakes I got fitted on Monday are screeching then he simply didn't use copper grease? Do you need to take the pads off again in order to add this?

porsche boy

Old Gill wrote:

Thanks, I've had it 2.5 years and been driven heavily (driving school car) . if the brakes I got fitted on Monday are screeching then he simply didn't use copper grease? Do you need to take the pads off again in order to add this?

you seem to have very little knowledge of cars to be a driving instructor. Perhaps you sholud read up a bit so you have a basic understanding.

mgbgt1978

Old Gill wrote: »

Thanks, I've had it 2.5 years and been driven heavily (driving school car) . if the brakes I got fitted on Monday are screeching then he simply didn't use copper grease? Do you need to take the pads off again in order to add this?

You would yes.
There should be anti-vibrate shims at the back of the pads also....thin pieces of metal the same outline as the pads. These don't always work so many mechanics will put a bit of copper grease (or plasti-lube would be recommended lately) on the back of the pads.
As the car does nearly all town work and all the braking that goes with that I would guess that the discs are probably not helping either. They probably don't need to be changed, just that the way they are wearing is contributing to the noise.
It should only be a 20 minute job for any mechanic to whip out the new pads and put a bit of copper-slip on them. I wouldn't blame the guy who changed your pads on Monday, many mechanics would expect the shims to do the job of stopping any screeching.

Old Gill

porsche boy wrote: »

you seem to have very little knowledge of cars to be a driving instructor. Perhaps you sholud read up a bit so you have a basic understanding.

This may come as a shock to you but not knowing how to change brake pads has no affect on my ability to teach someone to drive

jimgoose

Old Gill wrote: »

This may come as a shock to you but not knowing how to change brake pads has no affect on my ability to teach someone to drive

I think it was more this sort of statement:

Old Gill wrote: »

...What I was wondering was are there rear pads? I was under the impression the braking is done on the front wheels not rear?

Old Gill

mgbgt1978 wrote: »

You would yes.
There should be anti-vibrate shims at the back of the pads also....thin pieces of metal the same outline as the pads. These don't always work so many mechanics will put a bit of copper grease (or plasti-lube would be recommended lately) on the back of the pads.
As the car does nearly all town work and all the braking that goes with that I would guess that the discs are probably not helping either. They probably don't need to be changed, just that the way they are wearing is contributing to the noise.
It should only be a 20 minute job for any mechanic to whip out the new pads and put a bit of copper-slip on them. I wouldn't blame the guy who changed your pads on Monday, many mechanics would expect the shims to do the job of stopping any screeching.

Thanks very much..much appreciated advice

Special Circumstances

To be fair, whether a vehicle has discs or drums and which axles are braked or not would seem to be basic info that an instructor should have, at the very least so they can explain to pupils with questions.

Old Gill

jimgoose wrote: »

I think it was more this sort of statement:

Fair enough. My "basic" knowledge of the car was the footbrake worked on the front wheels and handbrake on the back. I'm appreciative to those who have informed me otherwise

mgbgt1978

The footbrake operates on all wheels. The handbrake on just one axle. Usually the rear, but on some models it operates just the front axle.

I think you probably heard somewhere that most of the Braking is done by the Front Wheels. This is true as most of the cars weight is pushing on the front (especially as you brake hard).
But the Brake system is still operating on all four wheels.

jimgoose

Old Gill wrote: »

Fair enough. My "basic" knowledge of the car was the footbrake worked on the front wheels and handbrake on the back. I'm appreciative to those who have informed me otherwise

Four-wheel braking has been pretty much standard since about 1930.

bucketybuck

Old Gill wrote: »

I was under the impression the braking is done on the front wheels not rear?

Bloody hell! You are teaching people to drive? :eek:

porsche boy

Old Gill wrote:

This may come as a shock to you but not knowing how to change brake pads has no affect on my ability to teach someone to drive

its not a shock at all, it seems to be the standard. As a driving instructor myself some years back i can remember being asked questions on how bits of the car work such as brakes, how the power gets from the engine to the wheels, how the clutch works etc and having to explain these so the student so they have a better undestanding of what happens when his feet push on the clutch for example. Im not saying your a bad instructor, as i said it seems to be the norm. When the ADI was being set up I sent them a letter suggesting instuctors should be tested on the basic mechanics of a car, as your expected to explain under the bonnet to the student.