Babelman Posted November 4, 2011 Report Posted November 4, 2011 when driving and have to brake quickly sometimes but not always, I have to nearly stand up on the brake pedal to get the car to slow down. It feels like the brake pedal is jammed solid, when braking. Not had car long so need advice/help. My thoughts are servo?? Quote
Babelman Posted November 4, 2011 Author Report Posted November 4, 2011 sorry forgot to add Alhambra Mk1 1998 1.9tdi Quote
chrispb123456 Posted November 4, 2011 Report Posted November 4, 2011 Check vacuum supply pipe at servo and vacuum pump, ends of pipe can split/perish causing loss of vacuum to servo.Can also affect operation of turbo boost control. Quote
cyborg Posted November 4, 2011 Report Posted November 4, 2011 sorry forgot to add Alhambra Mk1 1998 1.9tdi Hi there , There's a 10mm vacumm pipe going to the servo from the manifold, off that theres some rubber hoses which perish over time check them for leaks ,whistle sound Quote
seatkid Posted November 4, 2011 Report Posted November 4, 2011 (edited) sorry forgot to add Alhambra Mk1 1998 1.9tdi Hi there , There's a 10mm vacumm pipe going to the servo from the manifold, off that theres some rubber hoses which perish over time check them for leaks ,whistle soundOn the TDI the hard plastic pipe from the brake servo goes round the back of the engine to the right of the block to a T-piece/non-return valve. It continues from the T-piece to an engine driven vacuum pump mounted at lower block level at the front right hand side of the block. The T-piece feeds the Turbo control vacuum system. The hard pipe commonly splits at the ends longitually causing loss of vacuum. The small gauge turbo control vacuum pipes also known to disintegrate and/or drop apart - sometimes get pulled off by careless hands. Unfortunately its also relatively common to have the servo unit fail due to internal seals failing - the servo unit is not repairable. Start with the big plastic pipe first though as thats the most common. Edited November 4, 2011 by seatkid Quote
Babelman Posted November 4, 2011 Author Report Posted November 4, 2011 thanks all will look over weekend Quote
Babelman Posted November 5, 2011 Author Report Posted November 5, 2011 Was an easy fix, plastic pipe that connects to servo had slit,quick repair with duck tape and will order new one on Monday. Thank god it's not the servo looks a pig to get at. Thanks again for help.. :) Quote
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