I have had a look and i know rear brake squeel is fairly common on 100hps.
I had both my rear discs and pads changed last month and they are still squeeking. The pad is getting warm and is touching the disc, especially when going slowly around corners. Its driving me nuts! Is this the common problem or something else? Should i take it back to get it sorted? I assumed it would sort itself out over a few miles but so far no joy!

Thanks very much:bang:

have the back of the pads been greased properly with copper grease??

i dont have a 100hp so i dont have experience of this but copper grease works wonders just dont get any on the friction surfaces because you dont want grease on the face of the pad or disc

My 100hp's first mot failed due to one of the rear brake pads sticking, so i have had the same problem too

Gary said:

My 100hp's first mot failed due to one of the rear brake pads sticking, so i have had the same problem too

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dont say that!! youll get him/her worried

Mine are the same, the pads seem to bind on the disc a bit, even after 11,000 miles. Greasing doesn't solve it as it is not a typical squealing problem.

Thanks for the help. I've done about 1000 miles since they were changed and keep telling myself that the problem will sort itself out once the pad wears down a bit. Is this the same problem that people have that causes the rear pads to squeel or a different one? It drives me nuts some days but others it seems better.

coggie78 said:

Thanks for the help. I've done about 1000 miles since they were changed and keep telling myself that the problem will sort itself out once the pad wears down a bit. Is this the same problem that people have that causes the rear pads to squeel or a different one? It drives me nuts some days but others it seems better.

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What you describe is exactly how mine play up - slower driving, when brakes are warmed up. There is some design flaw, I rotated my tyres recently and span my rear wheels, they are binding a bit. It is not the pad thickness (11,000 miles now on my rear pads), nor something obvious catching.

coggie78 said:

Thanks for the help. I've done about 1000 miles since they were changed and keep telling myself that the problem will sort itself out once the pad wears down a bit. Is this the same problem that people have that causes the rear pads to squeel or a different one? It drives me nuts some days but others it seems better.

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I only get squealing or 'groaning' when I apply the brakes when reversing. Not at any other times.

HTH.

Based on my own experience of rear disc brakes on the Panda 4x4 climbing, I believe that all the above noises can be cured as follows.
Dismantle the rear calipers, remove the pads and thoroughly clean all parts, except the friction surfaces of the pads, with meths and a small toothbrush.
When replacing the pads, preferably new ones, use a very thin smear of copper grease not only on the backs of the pads but also on the edges of the backing plates where they contact the caliper.
Remove all loose rust from the edges of the discs and carefully tidy up the areas not swept by the pads with a flat file.
Wipe the swept areas of the discs with a clean cloth soaked with meths, then reassemble.

The only change I made was to fit standard EBC pads rather than original Fiat parts. Obviously I cannot tell if this made any difference in reducing the noises.

I had new rear pads fitted and they squealed/groaned for quite a while. The noise has gone now but in my experience, it is usually worse when the weather [and thus the brakes] is damp.

As Lauren says, it is usually worse when reversing but on this set of pads, the noise was there even when driving normally.

It always reminds me of a Whale's call

I replaced the rear pads on my 4x4 a couple of weeks back (identical rear discs to 100HP) and found that the offside wheel pads were neearly worn through but the nearside ones wer only half worn. As the 4x4 cant be out on the rollers at an MoT test cetnre (damages the viscous coupling), teh brake test is done on the road which only assesses if the car stops well enough and doesn't test each side independently. So sticking caliper seems a common problem.

As to squeal, the new pads had a pronounced chamfer to them, and I suspect this is mainly to reduce noise. Seems to have stopped the whale noises when braking while reversing.

posted too soon...
Meant to go on to say all disc brake pads are always just touching the disc -- they don't get 'retracted' like drum brake shoes when you release the brakes, so rely on the pads being 'eased away' from the disc by the action of driving. However, they should free off after a very short distance. If you stop the car with the brakes and then jack it up though, this 'easing off' may not have happened. Might also be worth checking that the handbrake mech on the rear of the caliper is free - with the handbrake off there should be a small amount of slack at the end of the cable where it's hooked onto the actuating lever on the back of the caliper.

Herts Hillhopper said:

I replaced the rear pads on my 4x4 a couple of weeks back (identical rear discs to 100HP) and found that the offside wheel pads were neearly worn through but the nearside ones wer only half worn. As the 4x4 cant be out on the rollers at an MoT test cetnre (damages the viscous coupling), teh brake test is done on the road which only assesses if the car stops well enough and doesn't test each side independently. So sticking caliper seems a common problem.

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I agree that, especially on rear disc brakes, sticking caliper is fairly common. However, this might imply that the piston in the caliper is sticking, which does not seem to happen. Instead, the pads stick within the caliper which is exacerbated by the relatively slow wear rate of the rear pads. This means that they stay at roughly the same position within the caliper for a long time.

After a lot of driving on heavily gritted roads last winter, the front pads stuck on my Panda Cross. This showed itself by very poor braking on the first application of the brakes of the day. Fortunately, a good blast with a pressure washer cured the problem.