I think I drove my S4 a little too hard this weekend...
11-20-2009, 04:40 PM
#11
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Check the big hose that comes off of the back of the intake manifold and runs to the firewall, roughly in the middle. This is your brake booster hose and it supplies pressurized air to the brake system to assist with braking.
Check this for leaks at the connections at the intake manifold and especially where the hose passes through the firewall.
Check this for leaks at the connections at the intake manifold and especially where the hose passes through the firewall.
not sure how the hose could come off without being messed with, but that's sure what it sounds like. it would explain your idle issues and lack of vacuum assist in the brakes.
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