Look for a rotted vacuum hose in engine compartment.... doesn't HAVE to be part of the brake system....just a big leak somewhere. The car is 16-17 years old and so are all the rubber hoses......look first near exhaust manifolds for hard/cracked hoses.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.