Breaking Problem

[brogon]

Hi all has any body have any idears of what is causing breaking problems at low revs.when i have applied the foot break  slowing down to trafic lights  after first depression of the foot break is verey hard to depress  but after reving up by a few seconds the break is ok. please help if you can. many thanks for any feedbck my car is a Galaxy TDI 115 2002. Thanks Brogon

Edited August 22, 2014 by brogon

[sparky Paul]

Sounds like a loss of servo assistance, probably a vacuum pipe leak.

 

Not sure exactly how the diesel vac pipes are arranged, but there are certainly known weak points - have a search of the forum. Otherwise, check the vacuum pipework back from the brake servo.

[seatkid]

As sparky says, the stiff plastic vacuum pipe that runs from the brake servo is prone to split lengthways at both ends causing a leak and weak or no assistance, particularly at low revs. Also check the similar diameter pipe that runs from the mechanical vacuum pump - dont know where this located on your engine I'm afraid.