darren Posted November 10, 2010 Report Posted November 10, 2010 hello, i have a mk1 galaxy tdi, i bought this 3 days ago and have noticed its hard to brake hard. There is at most times a slight hissing noise coming from a seal on what i believe is part of the servo,(the bit that the brake pedal arm pushes into), i noticed that the hissing stops as i touch the brakes. Also, where there seems to be a black seal on what i believe is the servo and i can press it with my finger and sounds the same like it lets air in. As to the braking, i can drive it ( with care) but no chance of emergency stop, as when i apply slight pressure its ok, but if i want any more than just slight braking then i have to press really hard and even then its doesnt stop sharp. I have had a couple of people round and thay both said its the servo, so i would very much like opinions on this as to wether it all sounds like it is.I have tried the test in the haynes manual about pumping brakes several times, then turn engine on whilst foot still on brake, and i do notice the pedal goes down slightly then stiffens, also every time i take foot of the brake you can really here the noise like its a quiet version of a foot pump. My problem now is cost as my budget was used in the purchase of the car. While on here there is another thing which i may post as seperate subject as i'm not sure if this has anything to do with this but when i apply the brakes the dash lights up as if i've turned the lights on, and on the right the fog light indicator lights up, they all go off as i take foot of brakes. Anyway, any advise will be greatly appreciated and i would like to thank anyone who contributes to this very useful site. Quote
chrispb123456 Posted November 10, 2010 Report Posted November 10, 2010 Hi there and welcome to the site. The brake servo is a sealed unit and is not repairable, there is a vacuum pipe connected to it if these pipe connections are OK them it certainly sounds like the servo is knackered and needs replacing, wouldn't recommend secondhand units either as it is quite time consuming and awkward to change.The light problem could be down to broken/bare wiring in the tailgate trunking (common fault) have you checked all your rear lights, heated screen, rear wiper etc are working properly also check for any blown or missing fuses. Unless you got the car for next to nothing I would take it back, did you get from garage or a private sale? Quote
Bigjeeze Posted November 10, 2010 Report Posted November 10, 2010 Chris may well be right - But if you do have to keep the vehicle I would check the vacuum hoses to the servo - It's quite common for them to perish and break leaving you with no servo. It is very unusual for a servo to go. BJ Quote
cyborg Posted November 10, 2010 Report Posted November 10, 2010 hi there, Do you red flashes like hand brake on when its not ? get some dot4 remove scuttle tray Low brake fuild can also give the effect you've described. possible brake switch on foot peddle for other problem. Quote
cyborg Posted November 10, 2010 Report Posted November 10, 2010 hi there, Do you red flashes like hand brake on when its not ? get some dot4 remove scuttle tray Low brake fuild can also give the effect you've described. possible brake switch on foot peddle for other problem.If the brake fluid is low there's always a reason,rarely is it a poorly fitted fluid cap . You may have a split pipes, front hose's check for leaky brake seal's .Safest option is to take each wheel off and thoroughy inspect brake's and all lines leading to Abs and servo. Quote
darren Posted November 10, 2010 Author Report Posted November 10, 2010 thanks Chris and everyone else who replied. I,m taking it back to dealer tomorrow, the guy seems ok to me and had already offered to sort it out, well i hope that he means hes gonna pay for whatever the problem is. I paid 1500 for it, 98 reg 123k miles and diesel, it is the best one by far i've seen and sounds very sweet so i have no plans to get or try to get refund. I must say that i cant hear the hissing noise now, but still hard to brake suffiently, and still no go for emergency stops. I really hope its the vac hose. And according to haynes , pumping brake then whilst keeping foot on brake turn engine on and i do feel the pedal go down slightly( not to far down), so that seems ok. Anyway, back to electrics, i just used it for work, only round the corner, when going home it was all frozen up so i put on the window heater and that also turns on dash lights, and when i was reversing the reverse light didnt work unless i turned the window heater button off. I guess those problems are common and hope i will learn how to deal with them, ( with a little help from you all). Well once again i wish to thank you for the replies, any more will be great, and i hope one day i too can reply and give advise to someone. Quote
darren Posted November 13, 2010 Author Report Posted November 13, 2010 PHEWWWWWWW.. luckilly, it was the vacuum pipe, it had a hole, has now been plugged so only a tempory fix. I am having trouble finding suppliers though. Found some on ebay which are sold in meter lenghths, so can anyone tell me if you buy the hoses like theses or are there specific ones made and shaped for galaxy. Thanks. Quote
deadpool2e Posted August 7, 2011 Report Posted August 7, 2011 Can anyone tell me where the servo is exactly on a mk2 tdi galaxy and where to find the vacuum pipes as i now have this problem. Quote
deadpool2e Posted August 8, 2011 Report Posted August 8, 2011 (edited) also is it easy to replace the vacuum pipes? i have also noticed a loss of power, could this be related? Cheers Mark Edited August 8, 2011 by deadpool2e Quote
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