96 Dodge Caravan LE 3.3L brakes gone

Van has been sitting for almost a year while I replaced the fuel pump and filter, cooling fan relay and temp sensor. I went to put it on the road and the brake pedal goes to the floor. No leaks and master cylinder is full. Could it be the ABS relay? If so how do I check it?

More likely air in the system or the master cylinder.

Thanks for the quick reply. How would air get into the system when it hasn't been opened.

Thanks for the quick reply. How would air get into the system when it hasn't been opened.


You may not be seeing puddles but have you pulled the drums and inspected the brake cylinders? Even a seep can let air in and given time your pedal can hit the floor. If all looks good I'd opt for a new master cylinder. It's probably leaking past the internal seals.

Just a little background info: http://www.aa1car.com/library/bfixes.htm

I tried to bleed the master cylinder but that didn't help. Will bleed the system and check the rest.