Westy

Front Caliper Sticking

7 posts in this topic

Hi guys,

 

So this week I started noticing an occasional clunk at the front of the car which seemed to only happen during braking at low speeds.  The clunk would also sometimes appear when pulling away after the initial clunk during braking.  Anyway, I have done 250 miles so far this week and have been trying to pin point the problem.

 

I'm pretty sure it's not suspension related as I've been over speed bumps and some rough roads with no clunking.  I've also done over 100 miles with the gearbox in manual mode just in case the clunk was as a result of a certain gear change, but no clunking.

 

This morning I didn't hear the clunk once on my way to work (50 miles) and then as I pulled into the carpark there was a horrendous screeching noise which was quite clearly rotational like metal on metal.  I opened my windows and I'm sure the noise was coming from the passenger front.  As I slowed, the noise reduced.  I did some hard braking in the carpark to try and clear the problem and this seems to have done the trick.  Under visual inspection I can't see anything on any of the 4 discs that might be a giveaway.  I'm going to go for a spin at lunch to see if the issue is still there.

 

Has anyone had anything similar on their E60/E61?

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Went for a spin at lunch. No problems now! Hope it doesn't come back anytime soon.

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Easiest way to tell is to get yourself a little digital temperature gun. Cost about £10 from maplins or any radio-controlled car shop. If you have a binding brake you'll be able to tell after a journey by pointing the temp gun at each disc. My rears were both about 36, front left was 66 and front right 94! 

Edited by Steve-Savalas
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Temperature gun arrived yesterday so I checked the temps of my discs this morning. All were around 18-19 degrees after parking up.

I heard the clunking a few times this morning though. Heard it during a turn on a roundabout and also when hitting a bump. No idea what's going on. Will need to get under the car or drop it off at my specialist.

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In my experience sticky callipers manifest as a firmer pedal, lots of brake dust, hot disc as said and juddery braking but not a clonk.

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Well originally I thought something must be loose and moving about but after the brake squeal the other day my suspicions were directed at the brakes. I'll get it checked and report back. Thanks for the input guys.

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I occasionally get the horrendous screeching. To describe it, imagine a "Just Married " car where someone has tied a chain of tin cans dragging on the road behind, it sounds like that.

A good Jet Wash poking the lance at the disk/pad area shifts it.

 

I've no idea how a small stone or some such could create such a noise but it's happened about 4 times over the last 5 years, and is definitely memorable.

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