Hissing sound and idle is high

signum · Jun 27th, 2013, 15:01

I've just started to get the following happen all the time:

There is a hissing sound on the driver's side - it sounds like it's in the dash.
The hissing sound stops when I put my foot on the brake pedal.
The idle is high (1400) - it drops down intermittently and then goes back up again.

I'm not very technical, but I know a man who is

Brendan W · Jun 27th, 2013, 15:04

Sounds like you have a leaking brake servo or a leak in the hose from it to the inlet manifold. The air leaking in affects the idle speed.

RiPsTa33 · Jun 27th, 2013, 15:09

Yes leaking brake servo is a common problem, absolute pain to change as you have to drop the whole subframe to get the servo out

weedeno belfast · Jun 27th, 2013, 15:12

theres a vacum hose bust/off on manifold some where as idle is high blocked pcv that has blowen pipe off posibly have a gander and see if ya can locate hiss that shud be first step gd luck

Jun 27th, 2013, 15:01	#1
signum New Member Last Online: Dec 29th, 2016 19:19 Join Date: Feb 2012 Location: leeds	Hissing sound and idle is high I've just started to get the following happen all the time: There is a hissing sound on the driver's side - it sounds like it's in the dash. The hissing sound stops when I put my foot on the brake pedal. The idle is high (1400) - it drops down intermittently and then goes back up again. I'm not very technical, but I know a man who is

Jun 27th, 2013, 15:09	#3
RiPsTa33 Trader Last Online: Jul 7th, 2022 15:22 Join Date: Jan 2007 Location: Shildon	Yes leaking brake servo is a common problem, absolute pain to change as you have to drop the whole subframe to get the servo out __________________ ABS Ecu Repairs £25 850 T5 304 Chip £80

Jun 27th, 2013, 15:12	#4
weedeno belfast weedeno 2003 v70 d5 se Last Online: Dec 2nd, 2016 19:57 Join Date: Apr 2012 Location: belfast	vacum hose is bust theres a vacum hose bust/off on manifold some where as idle is high blocked pcv that has blowen pipe off posibly have a gander and see if ya can locate hiss that shud be first step gd luck

Jun 27th, 2013, 15:04	#2
Brendan W Premier Member Last Online: Apr 2nd, 2024 19:50 Join Date: Dec 2007 Location: Wexford	Sounds like you have a leaking brake servo or a leak in the hose from it to the inlet manifold. The air leaking in affects the idle speed.

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