it happens everytime I get in the car and back out to the main rd but after driving for about 5 mins the sound goes away
Volvo Q&AAsk Your Question
2001 Volvo V70 XC Question: when I step on the brakes it sounds like there is air coming out what does that
Answer #1Greg's Orange Auto (14628 Answers) , Orange, CA - (714) 361-9386globalhelper August 19, 2013, 16:40Master
SEE PREVIOUS POST
Answer #2A-FERNA4 August 19, 2013, 18:12Enthusiast
THIS IS CAUSED BY THE BRAKE BOOSTER HAVING AN INTERNAL DIAPHRAM VACUME LEAK. CAUSING BRAKE BOOSTER VACUME PRESSURE TO ESCAPE WITCH CAN BE HEARD JUST OBOVE BRAKE PEDAL. .