brakes sticking!

andy · 01-05-09, 08:26 PM

hey, today forthe second time my brakes have started to stick on my 88 wr quattro, usually after being in traffic. if i leave the car around 15 mins, pump the pedal until its hard then start the car it seems to be ok....for a while. Aparently the master cylinder was changed to a BMW item just before i bought the car, bur sounds to me like a piston somewhere sticking. Any ideas??
many thanks
Andy

Alpha · 01-05-09, 09:05 PM

Had the same thing..felt like front brakes were pumping themselves on!.

.sometimes go for a week or two without happening. Ended up swapping the master cylinder and was fine afterwards..needed new pads and discs though

steveb · 01-05-09, 09:41 PM

Brake master cylinder

darreno'd' · 02-05-09, 06:58 AM

Very commonly master cylinder, but bearing in mind it has been changed already, it's worth checking the balence bar used in the lhd to rhd conversion has not been adjusted up too far.If it has it removes the free play required for expansion. Worth also checking that none of the calipers are sticking. Quickest way is to use an ir thermometer onto the discs, if you don't have one, jack the car up after a short drive and see which wheel is tight.

steveb · 02-05-09, 08:43 AM

I have also heard that the brake hoises can cause this they perish inside and stop the fluid returning correctly

pimpdriver · 02-05-09, 09:24 AM

Quote:

Originally Posted by steveb

I have also heard that the brake hoises can cause this they perish inside and stop the fluid returning correctly

I had the same thing on my 100 avant quattro last year.

I would drive down the motorway and the brakes were binding.

Quick change of flexible hoses, and all was OK.
Cheap too!!!

Martc · 02-05-09, 10:38 AM

Quote:

Originally Posted by pimpdriver

I had the same thing on my 100 avant quattro last year.

I would drive down the motorway and the brakes were binding.

Quick change of flexible hoses, and all was OK.
Cheap too!!!

Just did mine recently and it made a world of difference to the braking performance

andy · 04-05-09, 02:28 PM

niceone thanks very much, will have a play soon as i get a chance, hopefully something cheap, anyone know a a rough price on a master cylinder? cheers, Andy

steveb · 04-05-09, 03:37 PM

try pete reeve at qiuattro corner

andy · 26-09-09, 02:43 PM

still havent got round to doing this, but have found a bilstein/febi brand new brake pressure accumilator in the shed, worth trying?

01-05-09, 09:41 PM	#3
steveb Senior Member Classic Audi Club Member Join Date: Jul 2008 Location: West Berkshire Posts: 1,155	Brake master cylinder __________________ [FONT] '76 Leyland Princess 2200 HLS '79 Scirocco storm '84 WR '89 coupe quattro '01 A2 1.4 TDI SE '14 A3 1.4 TFSI COD [/color][/size][/font]

02-05-09, 06:58 AM	#4
darreno'd' Mr Sixty Thousand!! Classic Audi Club Member Join Date: Jul 2007 Location: berkshire Posts: 1,729	Very commonly master cylinder, but bearing in mind it has been changed already, it's worth checking the balence bar used in the lhd to rhd conversion has not been adjusted up too far.If it has it removes the free play required for expansion. Worth also checking that none of the calipers are sticking. Quickest way is to use an ir thermometer onto the discs, if you don't have one, jack the car up after a short drive and see which wheel is tight. __________________ http://www.oesems.co.uk/

02-05-09, 08:43 AM	#5
steveb Senior Member Classic Audi Club Member Join Date: Jul 2008 Location: West Berkshire Posts: 1,155	I have also heard that the brake hoises can cause this they perish inside and stop the fluid returning correctly __________________ [FONT] '76 Leyland Princess 2200 HLS '79 Scirocco storm '84 WR '89 coupe quattro '01 A2 1.4 TDI SE '14 A3 1.4 TFSI COD [/color][/size][/font]

04-05-09, 03:37 PM	#9
steveb Senior Member Classic Audi Club Member Join Date: Jul 2008 Location: West Berkshire Posts: 1,155	try pete reeve at qiuattro corner __________________ [FONT] '76 Leyland Princess 2200 HLS '79 Scirocco storm '84 WR '89 coupe quattro '01 A2 1.4 TDI SE '14 A3 1.4 TFSI COD [/color][/size][/font]

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01-05-09, 09:05 PM	#2
Alpha Grown up member Join Date: Nov 2007 Location: St. Helens, Merseyside Posts: 412	Had the same thing..felt like front brakes were pumping themselves on!. .sometimes go for a week or two without happening. Ended up swapping the master cylinder and was fine afterwards..needed new pads and discs though

04-05-09, 02:28 PM	#8
andy Grown up member Join Date: Nov 2008 Location: between anglesey, N.Wales and Stavanger, Norway Posts: 301	niceone thanks very much, will have a play soon as i get a chance, hopefully something cheap, anyone know a a rough price on a master cylinder? cheers, Andy

26-09-09, 02:43 PM	#10
andy Grown up member Join Date: Nov 2008 Location: between anglesey, N.Wales and Stavanger, Norway Posts: 301	still havent got round to doing this, but have found a bilstein/febi brand new brake pressure accumilator in the shed, worth trying?