Chevrolet: Malibu 2002 Soft brakes

Hi All

I had a front brake Job done on my Car Yesterday. The Vehicle has 45k miles
on it and runs excellent ( No intake manifold gasket Issue yet)
When the brake Job was finished the Mechanic took it for a ride and said its
all ready to go. As I got in and drove around the block I noticed that the
pedal goes all the way down to the floor to stop the car. I immediately went
back and they drove it again and put it back on the Lift. Nothing looked
out of the ordinary. They said they didnt want to adjust the Rear Brakes as
they are self adjusting ( I wonder?) They bled the front Brakes and the
softness has NOT gone away. They again advised me to drive it for a day and
see how it goes. Here's my question, since they never open the fluid system
in any way why would it need bleeding. All they did was compress the Caliper
to fit in the new pads. What else could have gone wrong? The Brake fluid
level was good


Thanks to all who intelligently reply.

Larry P wrote: 
Even without opening the fluid system on the brakes, brake fluid
gradually grabs moisture from the air which is why it changes color and
gets darker with time. To keep brake performance at top efficiency and
get maximum life from calipers and such, it's a good idea to fully bleed
the brake system each time you put new pads/shoes on (brake shoes that
is, not the ones for your feet <g>). Brake fluid doesn't compress, and
neither does water, but other impurities that collect in the fluid can
and bleeding the brakes will usually help with that. Also if you have
antilock brakes, it's not a good idea to just push the pistons back into
the calipers as the contaminated fluid (tends to be more deteriorated at
the wheels in part due to heat from stopping) can damage the ABS
actuaters. It's generally recommended with ABS to open the bleeder
slightly as you push the piston back in so the excess fluid doesn't get
pushed back up the brake line, and then to bleed the system until you
get fresh clean fluid out of the bleeder at each wheel.

IMHO, telling you to just drive it with the pedal going to the floor to
stop the car borders on criminal negligence on the part of the shop that
did the work. That type of behavior means SOMETHING is wrong with the
system, and my opinion on brake issues like this the car should not be
driven at ALL in this condition. I say this ESPECIALLY if the brakes
were not like this when you took it in (I'm assuming this is the case
since I would not expect you would have thought it strange if it had
been this way when you took it in). If I am correct, I would presume
they did something to damage the brakes until/unless the could prove
otherwise to me (then again I always do my own brake jobs since I don't
trust most shops).

--
Cy Welch
89 Camaro RS 5.0 TBI
03 Malibu