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Cali-T5
Monday 3rd March 2014, 19:30
Whenever I put my foot on the brake and lift off there is a hissing. It carries on until I press the pedal again and release it slowly.

It also happens even after I switch the ignition off.

Any ideas what it could be?
Harvey
Monday 3rd March 2014, 20:51
Brake servo ?.
claymore
Monday 3rd March 2014, 20:52
cruise control?
Cali-T5
Monday 3rd March 2014, 21:17
Its apparently the brake booster!!!!

Expensive fix?
Harvey
Monday 3rd March 2014, 21:30
Its apparently the brake booster!!!!

Expensive fix?

It's not a easy job as the engine needs to be dropped down to get enough room to replace it.
I think they are a bit pricey as well.
Cali-T5
Monday 3rd March 2014, 21:39
B****cks

:-(
laughjimbo
Monday 3rd March 2014, 23:52
I've got the same problem, Volvo want over £400 for one, I got one from Parts4Less for £170 delivered a few months ago when they had a sale on. Same parts numbers as what's on mine so an original part just not got the volvo sticker added.
I need to get mine fitted or try it myself if anyone knows the best way of doing it all help would be much appreciated. My T5 is a 2001 so has STC and not DTSC. Mine has had the hissing now for about 3 years but has recently got a lot worse.