1996 HONDA ACCORD FRONT BRAKE LOCK UP AFTER

I think the problem is at the master cylinder

The pedal goes down a long way(Rear brake shoes out of adjustment) or the pedal is hard to push and you have to about use two feet to stop the truck? (booster problem)

if the abs light came on then you have a bearing problem if the wheels not turning then its bad there are so many thing that go wrong its hard to tell with out the car here to look at

You need to check the brake fluid if it is low it will take air in the system,you need to take that air lock in order to get a better brake.

I suspect that you have front disc and rear drum brakes.You did not say which of your brakes are locking up. I suggest that if your front brakes are locking {skid} that means your rear brakes are not engaging. If your rear brakes are locking {skid} then I suggest you have problems with park brake or brake fluid leaking onto the rear shoes.
More info would help me help you. I will check back soon.

Try the following to confirm if is the servo unit .( engine off,pump few times the brake pedal to become stiff.Keeping pressed the pedal start the engine and if servo is working you will feel the pedal slightly goes down.If not will not move at all-remain stiff.) Also if you do have the check valve close to servo not working you can realize it by the engine idle ( erratic ) and the servo not working.The other possibility if the vehicle is fitted,the ABS unit itself.

You seem to have two (2) separate problems one may be a BAD brake light switch this switch is mounted at the top of BRAKE pedal and control the locking mechanism on gear shifter(safety component-for example if a kid is sitting in seat with vehicle running he/she will NOT be able to put vehicle in gear without stepping on brake). The other problem is a BAD shifter cable-this cable moves the selector in the transmission when you move shift knob. Good luck and thanks for using FIX YA

there is a switch on brake pedal that tells transmission that the brake pedal is depressed. you can take the switch apart and clean it with sand paper. The contacts inside of it. I would replace it though when you can.

the brakes have to be bleed you wrote that when you start the car the pedal goes to the floor that means the booster is working fine take it back and tell them you want the brakes bleed

its the brake switch....... i bet you dont have any brake lights......... its a switch by the brake pedal 14mm wrench measure the distance on the old switch on the threads good luck