Service (and repairs) time ...
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Service is due so I'm hoping to get it booked into the garage next week ...
I've got a few faults/issues that I'm looking to get fixed while it's in too. Has anyone got any advice or technical info on any of these faults/symptoms that I can pass on to the garage? Firstly, I'm getting a creaking when pressing the brake pedal (whether moving or stationary) that seems to be coming from the o/s/f calliper. Is this common and likely to be a calliper fault? Secondly, I have an intermittent ABS/ESP issue that is recording the following fault code: Quote:
Thirdly, I've had a whirring noise for a while that's engine-speed related (starts about 2000rpm and gets higher pitched with increasing rpm). The garage had a brief look at it when it first occurred but suggested that I "let it develop". They suspected the bearings in the alternator and/or the PS pump. The noise hasn't got any louder in the past few months but I'd like to get it fixed now. Is there any simple way to determine where the noise is coming from? Lastly, I seem to have a bit of front bumper droop. I noticed a while ago that it didn't seem to look quite right. Studying the recent Carding Shed photos (see attached), using Jim's car for comparison, there's clearly a gap that shouldn't be there. Has it been refitted incorrectly or is there some way to adjust it? |
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Brilliant!
Thanks very much MJ! :) |
My breaks creak a bit too, I suspect the front calipers, even though they were re-conditioned a couple of years ago. No ill effect so far. Although I will try re-greasing them too as MJ suggests.
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The S8 I have in at the moment came in to the workshop with the brakes almost on fire. Turns out the inner pads were jammed solid in the calipers and only the outer pad was moving, caused by rust on the edge of the pad backing plate, plus dirt and brake dust building up on the caliper. The calipers on this one were reconditioned a couple of years ago, but the Brembos are a flawed design in that regard as the clearances are so tight. I pull the pads and clean everything up every oil change which stops them getting stuck +++
(I also pull and re-grease the front strut pinch bolt every oil change too ;) ) |
MJ is always spot on with advice. +++ The front caliper creakiness is (was, in my case) associated with the pads jamming in the stainless steel pad guides held in place on the aluminium caliper block by torx headed screw which is impossible(?) to remove without splitting the block. The corrosion between the s/steel and aluminium forces the guide outer edges which then clamp on the pads. You can do a certain amount of cleaning out the corrosion with the calipers removed using emery paper etc but its difficult to get the guides to resume their former shape. You can, of course, file down the edges of the pads so that they can fit but its not really a solution. Thats the point at which I got mine refurbished.
I suggest you test the temperature of the discs after a run to see if there is any overheating but its a certainty that wthout some work, it will develop into overheating pads/discs at some point in the near future. |
Thanks, definitely need to look into it then. I often check the disc temperature after a drive after one of the rears jammed on my previous S8. On this one so far no excess heat, just creaking. I guess the ultimate solution is a front brake upgrade lol.
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I've just had a quick look under the seat. There seems to be something under the carpet near where the wiring loom enters. I assume that the seat and numerous bits of trim need to be removed to get to it (without resorting to slashing the carpet open)? Quote:
I'll ask the garage to take a look at them and see what they think. Who refurbished your callipers and what's the general consensus for the best place(s) now? I seem to remember there was some mixed experiences/reviews with some of the refurbishers. Is there one particular refurbisher who does a consistently good job? And is there a substantial difference in price between refurbished and new (OEM)? |
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if the side bumper brackets arent loose / havent moved the it may be that at some point you have caught the bottom lip on a surface which has caused one of the small plastic sliders that the bumper slides on to to break off, partly or completely - this would result in the same issue. New brackets from memory will be between £10 and £20 each so not too expensive if they are damaged
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